Service Instruction Electrical Part Turn Actuators for

43/68-10 EN
Continuous Modulating Control
PME120AI / PME120AN (Contrac)
Rated Torque 100 Nm
(80 ft-lbs)

®
P R O F I
PROCESS FIELD BUS

B U S
 Electrical Part Turn Actuators for Continuous Modulating
Control PME120AI / PME120AN (Contrac)

Service Instruction
Document No. 43/68-10 EN
Issued: December 2005

Manufacturer:
ABB Automation Products GmbH
Schillerstr. 72
32425 Minden
Germany

Tel: +49 551 905-534

Fax: +49 551 905-555

© Copyright 2005 by ABB Automation Products GmbH

We reserve the right to technical amendments
This document is protected by copyright. Information in this document is intended only to assist the
user in safe and efficient operation of the equipment. Its contents are not to be reproduced in full or part
without prior approval of legal owner.

2 Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 43/68-10 EN
 Content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page
Important information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Transport and storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Safety and precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Actuator versions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
PME120 AI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
PME120AN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Lubrication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Mounting position and filling capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Oil specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Oil change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Sealing ring of output drive shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Brake adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Electrical Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Wiring diagrams (Integrated electronic unit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Exchange of position sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Dismounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Electrical Test Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Test values (position sensor) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Test values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Winding resistance (motor) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Failure detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
LED signals at local control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Trouble Shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Failures at brake, fuse or wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Operation mode (MAN / AUT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Input configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Operation behind step controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Failure Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Failure due to response of positioning loop monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
User Interface Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

43/68-10 EN Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 3
 Important information

1 Important information
1.1 General
Read and save all instructions prior to installing, operating, and servicing this product. If any of the in-
structions are not understood, contact your ABB representative for clarification.
1.2 Symbols
In order that you can make the best use of this document and to ensure safety during commissioning,
operation and maintenance of the equipment, please note the following explanation of the symbols
used.
Explanation of the symbols used:

Symbol Signal Word Definitions

DANGER DANGER indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.
STOP (High level of risk.)

WARNING WARNING indicates a potentially hazardous situation which, if not

avoided, could result in death or serious injury.
(Medium level of risk.)
CAUTION CAUTION indicates a potentially hazardous situation which, if not
avoided, could result in minor or moderate injury.
(Low level of risk.)
NOTICE NOTICE indicates a potentially harmful situation which, if not avoid-
ed, may result in damage of the product itself or of adjacent objects.
(Damage to property)
IMPORTANT IMPORTANT indicates useful hints or other special information
which, if not observed, could lead to a decline in operating conve-
nience or affect the functionality.
(Does not indicate a dangerous or harmful situation.)

As well as the instructions in this document, you must also follow the generally applicable accident pre-
vention and safety regulations.
If the information in this document is insufficient in any situation, please contact our service department,
who will be happy to help you.
Please read this document carefully before installation and commissioning
.
To ensure proper performance, use qualified personnel who have been trained,
qualified and certified by ABB to install, operate, update, tune, and maintain the ac-
tuator, the electronic units and the wiring.
ABB will not take any responsibilty for personal injuries or material damages which
were caused by non-trained, non-qualified or non-certified personnel.

1.3 Transport and storage

Carefully inspect for shipping damage. Damage to the shipping carton is usually a good indication that
it has received rough handling. Report all damage immediately to the freight carrier and your ABB rep-
resentative. Verify that the items on the packing list or bill of lading agree with your own.

4 Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 43/68-10 EN
 Introduction

2 Introduction
This service instruction refers to plug
the ABB part-turn actuators
PME120 AI (with integrated elec- hand
wheel ball and
tronic unit) and PME120AN (for
socket
separate electronic unit). It amends joint
and deepens the routine mainte-
nance description in the standard lever
instruction, which we strongly rec-
ommend to be also available for all cover key
for motor (AN)
maintenance work. incl. also electronic shaft
unit (AI)
2.1 Safety and precautions
When mounting the actuator in ar-
eas which may be accessed by un-
authorized persons, take the
required protective measures. adjustable
limit stop
Fig. 1: PME...; main components

STOP - The actuators perform movements for positioning vanes and valves. Handle properly and with care.
Otherwise, a hazard of bruise injuries may arise.
STOP - When changing the oil of the actuator, thoroughly remove any oil that may have run down on the floor
during the procedure to avoid accidents.
- Dispose of the waste oil in compliance with the respective local regulations. Make sure that no waste
oil reaches the water cycle.
- Only qualified specialists who have been trained for these tasks are authorized to mount and adjust
the control actuator, and to make the electrical connection.
- When working on the actuator itself or the electronics always observe the locally valid accident pre-
vention regulations and the regulations concerning the construction of technical installations.
- Use the eye bolt at the actuator to lift or lower it. Only load it vertically. Do not lift or lower the actuator
when it is mounted on a valve or similar final control element.
- Switch-off the voltage supply; make sure that unintentional switching on is not possible
- Make sure that switching off the power supply does not affect the plant process.
- Make sure that the final control element is not exposed to process forces.
- Refill the oil and check all mechanical and electrical interfaces for proper connection once the instal-
lation, commissioning, service or maintenance work is done.
2.2 Tools
IMPORTANT Maintenance at CONTRAC actuators requires tools which are usually available in a workshop. Please
consider that all dimensions are based on the metrical system. This applies also for the wrench sizes,
threads etc. Using improper tools may damage the actuator or its components.
Use appropriate sleeves for the installation of the sealing rings (see chpt. 5.3.2.2 for details).

43/68-10 EN Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 5
 Actuator versions

3 Actuator versions
Part-tun actuators PME120 are available in two versions:
- PME120 AI (with integrated electronics)
- PME120 AN (for separate electronics)
3.1 PME120 AI

PME120AI electronic unit

Fig. 2: PME120AI with dismounted electronic unit

3.2 PME120AN

plug

PME120AN electronic unit EAN823 electronic unit EAS822

for field installation for rack installation

Fig. 3: PME120AN with available, separate electronic units

6 Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 43/68-10 EN
 Lubrication

4 Lubrication
The spur wheel gearings of PME120AI / PME120AN are oil lubricated. They contain the max. oil quantity
when leaving the manufacturer. In order to avoid any overpressure in the gearbox (e. g. due to thermal
influence) replace the uppermost check plug by the separately supplied venting plug once the actuator
is installed.
Standard actuators are delivered with a venting plug with a metal cap. Actuators which are equipped
with an anti-condensation heater are delivered with a venting plug with a plastic cap.
4.1 Mounting position and filling capacity
1) 2) 1) 2)
1) 2)
1) 2)
mounting
position

1) 2)

IMB 3 IMB 6 IMB 7 IMB 8 IMV 5 IMV 6

Fig. 4: Mounting position PME...1) = inspection screw, 2) = venting screw

Min. oil quantity;

2.2 2.5 2.2 2.2 2.5 2.5
approx. [l]
Min. oil
level [mm]
45 2 42 20 23 17
under inspection
screw
Table 1: Filling capacity PME...

4.2 Oil specifications

Motor bearing
Actuator type Ambient temperature Oil type
(grease)
PME 120 AI - 10°C ... + 55°C Calypsol H442
(with integrated electronic unit) -251) ... + 55°C ESSO Beacon 325
PME 120 AN -10°C... + 65°C Mobil SHC 629 Calypsol H442
(for separate electronic unit) -25 1) ... + 65°C ESSO Beacon 325
+1°C...+85°C 1) Calypsol H442
Table 2:

1)
actuator is equipped with an additional heater

43/68-10 EN Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 7
 Maintenance

4.3 Oil change

Use the lowermost plug to drain the oil. If the actuator basement does not allow to put an appropriate
catchment device under the lowermost drain plug keep this one closed and open the uppermost drain
plug. Push the pipe of a hand pump through this opening until the end reaches the bottom. Use the
hand pump to get the oil manually out into the catchment device.

NOTICE Do not mix oil for different temperature ranges. Dispose of the waste oil in compliance with the respec-
tive local regulations. Make sure that no waste oil reaches the water cycle.
Proceed as follows to drain or change the oil (consider previous hints):
- provide a container capable to take the expected oil quantity acc. to table 1
- open or undo the venting plug
- unscrew the lowermost inspection screw and use it to drain the oil
- make sure that the entire oil is out of the actuator
- screw in and tighten the drain plug
- complete other maintenance work (if required)
- refill the appropriate amount of oil and tighten the venting plug
5 Maintenance
Contrac actuators feature a robust construction. As a result, they are highly reliable and require only
little maintenance. The maintenance intervals depend upon the effective load.
The built-in microprocessor evaluates the actual load factors (e.g. torques, movements, temperatures,
etc.) and derives the remaining operating time until the next routine maintenance is required. Use the
configuration program for viewing this information.
CAUTION All maintenance work must be carried out by qualified specialists who have been trained for this task.
Switch-off the power supply and protect the actuator against unintentional switch-on prior to any main-
tenace. Make sure that disconnecting the power or any mechanical linkage does not endanger the any
process or person. Make sure that the actuator is not exposed to process forces during the maintenance
work.
Apart from the load dependent maintenance intervals determined by the microprocessor we recom-
mend routine maintenance at least every 10 years.
The following description of the maintenance work provides that the actuator is disconnected from the
damper and that all electrical supply is disconnected.

8 Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 43/68-10 EN
 Maintenance

5.1 Lever
5.1.1 Lever removal
In some case it may be useful to detach the linkage bar from the ball-and-socket-joint, however, it is
not absolutely necessary. Refer to fig. 5 and 6 for the removal procedure!
- screw-off the nut on the lever clamping bolt (1) and put the bolt aside
- put an appropriate draw-off tool (2) onto lever and shaft (see fig. 6 for details); make sure that the
claws (3) are symmetrically behind the lever and that the bolt tip is on the shaft center (5)
- put a wrench onto the opposite bolt end and turn the bolt;
- put the lever carefully aside once it is off the shaft

4 3
4

5
1

2
3
Fig. 5: Lever mounted on the shaft Fig. 6: Use of draw-off tool for lever removal

5.1.2 Lever installation

NOTICE Make sure that the shaft surface and the shaft bore in the lever are clean and free of grease or any other
lubricant
- put the appropriate key into the groove in the shaft
- use an expanding srew to spread the lever seat
- push a counter part (soft metal) into the lever gap in order to protect the expanding screw thread
- push the lever onto the shaft until it is nearly in the same position as it was before
- put the lever clamping bolt into the lever and tighten the nut with a torque of 23 Nm (17 lbf-ft)

43/68-10 EN Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 9
 Maintenance

5.1.3 Ball-and-socket-joint
NOTICE The ball-and-socket joint may be mounted / removed with the lever mounted on the shaft or with dis-
mounted lever. If the lever remains mounted on the shaft, move it into a position, where you get free
access from the rear lever side.

1 2 3

4
68de_0030 5

6
68de_0027
Fig. 7: Ball-and-socket-joint Fig. 8: Use of draw-off tool

In some case it may be useful to detach the linkage bar from the ball-and-socket-joint, however, it is
not absolutely necessary.
5.1.3.1 Removal
- pull the cotter pin (1) out of the castle nut (2)
- screw-off the castle nut
- put an appropriate draw-off tool (3) onto lever (4) and joint bolt (5) (see fig. 8 for details); make sure
that the claws (6) grip symmetrically behind the lever and that the bolt tip is on the joint bolt center
- put a wrench onto the opposite bolt end and turn the bolt clockwise
- press the joint bolt out of the lever
5.1.3.2 Installation
- push the bolt of the ball-and-socket joint into the lever hole
- put the crown nut onto the bolt and tighten it with the required torque of 80 Nm (60 lbf-ft).
- secure the crown nut with a NEW cotter pin

10 Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 43/68-10 EN
 Maintenance

5.2 Sealing ring of output drive shaft

4 output
shaft 2 hand wheel
3 1 mechanism

drive
pinion

motor

brake

Fig. 9: Sectional view of PME120...

43/68-10 EN Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 11
 Maintenance

In order to change the O-ring (2) and sealing

ring (4) of the output drive shaft proceed as fol-
lows: flange
screws
- remove lever or coupling from the output
shaft
- make sure that the oil level is below the O-ring
(1)
- if necessary drain the oil (see chpt. 4.1)
- remove the key (2)
- loosen and remove the flange screws tap holes
- two tap holes (thread size: M6) on the bolt cir-
cle for the flange screws allow to use forcing
screws; turn these screws clockwise to re-
move the flange (3); the thread length of the
forcing screws should be at least 25 mm
- pull the flange (3) from the shaft
- turn the forcing screws out Fig. 10: Front view of shaft bearing flange
- take the O-ring (1) and the sealing ring (2) out
- clean the shaft and the flange; slightly grease the sealing ring
- replace the O-ring and the sealing ring
- cover the key groove in the shaft prior to the flange re-installation in order to avoid any damage of the
new sealing ring
- push the flange carefully over the shaft and fasten the flange screws crosswise;
tightening torque for the flange screws = 2.8 Nm (2.01 ft-lbs)
- remove key cover and re-install key (4), lever or coupling

sealing ring

flange

(d00161rxa)

Fig. 11: Flange and sealing ring (exemplary picture)

IMPORTANT Make sure that the „open“ side of the sealing ring points towards the oil.

sleeve
(auxiliary tool)

sealing ring

flange
(d00162rxa)

Use of auxiliary tool for sealing ring installation (exemplary picture)

12 Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 43/68-10 EN
 Maintenance

5.3 Motor
PME120 uses an integrated motor. The stator is integrated into the actuator housing which makes the
motor housing a part of the actuator housing.
5.3.1 Motor removal
STOP Note that the actuator position may be changed accidentally by the external load on the drive when the
brake is released or the motor is removed.
STOP
3

2
4

1
Fig. 12: Rear view of PME120 (without cover / electronics) Fig. 13:

- remove the rear cover (cover with electronics at PME120 AI)

- unscrew the 4 motor fastening screws (1)
- loosen the 4 grub screws (2)
- take the brake body with rotor out (3)
- take the stator (4) out

NOTICE The lower end of the stator shaft is supported by 2 separated disk springs. Make sure you get them out
with the motor.

43/68-10 EN Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 13
 Maintenance

5.3.2 Motor shaft sealing ring

The motor shaft sealing ring prevents the oil in the gearbox to penetrate into the motor housing.
Once the stator is out, use two appropriate hooks (1) to pull the motor sealing ring (2) out; see fig. 14.
5.3.2.1 Removal
1

Fig. 14:
5.3.2.2 Installation

squeezer

oil

mounting
sleeve

sleeve
flange
sealing ring

gearbox

Fig. 15:
- grease the new sealing ring and press it in the flange as shown in fig. 15
- make sure that the „open“ part of the sealing ring points towards the oil; see fig. 15.
- use appropriate squeezer or similar device to press the sealing ring uniformly into the flange (see right
part of fig. 15)
5.3.3 Motor installation
- put the stator into the actuator housing
- make sure, the hose protected cables are within the groove (see fig. 16)
- put the rotor with the brake body into the stator housing
- tighten the 4 motor screws
- tighten the 4 grub screws to tense rotor / stator housing
- use appropriate retainer (DELO-ML 5228 or LOCTITE 243; both medium-firm; detachable) to secure
the grub screws
(refer to fig. 12 + 13 for reference no.)

14 Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 43/68-10 EN
 Electrical Connection

5.4 Brake adjustment

STOP Note that the actuator position may be changed accidentally by the external load on the drive when the
brake is released or the motor is removed
STOP In automatic mode the brake is permanently
released. Therefore, it is not exposed to 2 thickness
wear and does usually not require any re- gauge
3
adjustment.
However, if you want to check the brake
gap, proceed as follows
- disconnect the actuator from mains sup-
ply
- remove hood (PME120AI incl. electronic
unit)
- remove the rubber cover of the motor
- unscrew the two grub screws (1)
- put two thickness gauges (0.15 mm /
0.0059“) diametrically opposed between 1
the two plates (3 + 4) 4
groove
- press plate 1 down Fig. 16: Brake (rubber cap removed)
- tighten the two grub screws (1)
6 Electrical Connection
6.1 General
The cable between actuator and electronic unit is connected to the electronic unit via terminals and to
the actuator via a plug. The plug housing may contain a carrier for terminals or for the cable ends with
crimp sockets.
crimp carrier terminal carrier

cables with
cables with cable end
sleeve
crimp pins

or

carrier
male carrier
plug housing

Fig. 17: Exemplary illustration of cable connection to the actuator; plug housing may contain alternatively a terminal car-
rier or a crimp carrier.

43/68-10 EN Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 15
 Electrical Connection

6.1.1 Actuator versions

Part-turn actuators PME120 are available in two versions:
- PME120 AI (with integrated electronic unit)
- PME120 AN (for separate electronic unit)
6.1.1.1 PME120 AI

PME120AI electronic unit

Fig. 18: PME120AI with dismounted electronic unit

6.1.1.2 PME120AN

plug

electronic unit EAN823 electronic unit EAS822

for field installation for rack installation
Fig. 19: PME120AN with available, separate electronic units

STOP Disconnect the actuator and electronic unit from the mains supply before you start working at the elec-
trical components. Make sure that switching off the actuator does not affect the process!
STOP 6.1.2 Removal of integrated electronic unit

NOTICE If you want to use a faultless running electronic unit for another actuator, it is absolutely necessary to
delete the basic settings of the operating range before you remove it. Press the drive buttons and
on the LCP for at least 5 sec. until both LED flash simultaneously.
For the removal proceed as follows:
- switch-off the power supply and disconnect the plug 1
- loosen the 4 fastening screws (1)
- pull the electronic unit slightly apart

electronic
unit

Fig. 20: PME120AI

16 Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 43/68-10 EN
 Electrical Connection

6.2 Covers
Terminal covers and other components at the Contrac 3 1
actuators and electronic units are fastened with 4 or cover or
more screws (only 2 screws for local control panel cov- similar
er). In some cases they are additionally sealed with a soft screws component
rubber gasket. In order to avoid a gap between the hous-
ing and the cover (or the other component) tighten these
screws evenly crosswise according to the order in the
2 4
basic sketch in fig. Fig. 21: to get an even load
Fig. 21:Exemplary cover
Start with one screw and tighten it slightly. Then tighten
the 2nd, opposite screw in the same manner. Continue with the remaining screws. Finally tighten the
screws in the same order. This will ensure a tight seal.
6.3 Wiring diagrams (Integrated electronic unit)
6.3.1 HART
The electrical connection is done with a plug on the actuator.

sub distribution board

mains ext. fuse screen connected to both ends
one-sided screening
in further wiring possible
L N

setpoint
DI1 DI2 DI3 DO1 DO2 DO3 +HART act. pos. transmitter

Han 10E
MAN/AUT MAN(+) MAN(
) ok/fault endp. 0% endp.100% out 0/4...20 mA 0/4...20 mA 4...20 mA

plug
Han 24E

1 13
3 4 5 6 7 8 15 16 17 18 19 20 21 22 23 9 10 11 12 1 2
+ - + - + - + - + - + - +
RB RB
I
24V + - + -
Uv
U 24V

Contrac actuator (option)

(r00295x1)

Fig. 22:

6.3.2 PROFIBUS DP
mains ext. fuse Bus in Bus out

L N

Contrac actuator
green
green

(plug)
red
red

bus termination
B A B A

1 13 bus
Han 24E

S1
connection

(r00011x1)

Fig. 23:

43/68-10 EN Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 17
 Electrical Connection

6.4 Wiring diagram

(for separate electronic unit)
6.4.1 EAN823 (HART)

sub distribution board

mains ext. fuse screen connected at both ends
one-side screening
in further wiring possible

setpoint
DI1 DI2 DI3 DO1 DO2 DO3 Uv +HART transmitter act. pos.
MAN/AUT MAN(+) MAN(
) ok/fail. end p. 0% end p. 100% out 0/4...20 mA 4...20 mA 0/4...20 mA

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 26 27 28 29 30 31
L N
+ - + - + - + -+ - + + -
RB RB
I
24V + - + -
Uv
24V U

Contrac actuator

H1 H2 U V W Br Br PE 17 18 19 20 21 22 23 24

Han 10E Han 24E

1 2 1 2 3 13 14 17 18 19 20 21 22 23 24

heater M sensors
approx. 6 W 3~
(option) Contrac electronic unit
motor brake r00350x1

Fig. 24:

18 Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 43/68-10 EN
 Electrical Connection

6.4.2 EAN823 (PROFIBUS DP)

mains ext. fuse

Bus in Bus out

Contrac
electronic unit

green
green
L N

red
red
bus termination

screw terminals
B A B A
S1
bus connection 28 29 30 31

H1 H2 PE 17 18 19 20 21 22 23 24
U V W Br Br

Han 10E Han 24E

plug 1 2 1 2 3 13 14 17 18 19 20 21 22 23 24 plug

heater Contrac
approx.6 W M sensors
actuator
(option) 3~

motor brake
r00010x1

Fig. 25:

6.4.3 EAS822

sub distribution board

mains mains
ext. fuse
screen grounded at both ends AC 110...250V
one-sided screening in further
wiring possible

Uv setpoint
DI1 DI2 DI3 DO1 DO2 DO3 + HART transmitter act. pos.
MAN/AUT MAN(+) MAN(-) ok(fault end0% end100% Uv 0/4...20 mA 4...20 mA 0/4...20 mA

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 28 29 26 27 30 31
L N
+ - + - + - + - + + - + -
RB RB
I
24V + - + -
Uv
24V U

Contrac
U V W Br Br PE electronic unit 17 18 19 20 21 22 23 24

Han 24 E Han 10 E
1 2 3 13 14 plug 17 18 19 20 21 22 23 24 plug 1 2

heater

M Contrac approx. 6 W
3~ (option)
actuator
sensors
motor brake r0363x1

Fig. 26:

43/68-10 EN Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 19
 Electrical Connection

6.5 Fuses

Electronic Fuse
Fuse type Location U = 115 V U = 230 V
Unit dimens.
integr. External fuse -- external 16 A, slow
Mains fuse 5 x 20 mm main pcb 6.7 A, slow 3.15 A, slow
Analogue setpoint input 5 x 20 mm main pcb 40 mA; fast
heater (only f. actuators f. - main pcb
5 x 20 mm 2 A; slow
25°C ambient temperature)
EAN 823 External fuse -- external 16 A, slow
Mains fuse in connection
5 x 20 mm 6.7 A, slow 3.15 A, slow
chamber
Analogue setpoint input in connection
5 x 20 mm 40 mA; fast
chamber
Anti condensation heater + in connection
heater (only f. actuators f. - 5 x 20 mm chamber 2 A; slow
25°C ambient temperature)
EAS822 external fuse -- external 16 A; slow
mains fuse in connection
5 x 20 mm 6.7 A, slow 3.15 A, slow
chamber
fuse for digital output DO1, in connection
5 x 20 mm 3 x 0.2 A; medium time lag
DO2, DO3 chamber

Table 3:

6.5.1 Fuse location

6.5.1.1 Integrated electronic unit (PME120AI)
mains fuse spare fuse for mains supply

main pcb

fuse for analog setpoint input heater fuse (only for -25°C version) (68de0016)

Fig. 27:

20 Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 43/68-10 EN
 Electrical Connection

6.5.1.2 EAN823
NOTICE Remove the cover of the connection chamber carefully in order to avoid any damage

fuse for analogue

setpoint input
cable
glands signal terminals
(not part
of delivery)
terminals and
fuse for anti
condensation heater
(available only when
heater installed)

tapholes

motor terminals

mains fuse

terminals for
(68de0145)
mains supply
Fig. 28: Fuses in EAN823

43/68-10 EN Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 21
 Electrical Connection

6.5.1.3 EAS822

dig.
output
fuses

mains (68de0053)
(68d_0184)
fuse

Details: digital output fuses

fuse f. DO3
fuse f. DO2
fuse f. DO1

(68de0026)
(detail view of
output fuses)

Fig. 29: Fuses in EAS822

22 Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 43/68-10 EN
 Exchange of position sensor

7 Exchange of position sensor

7.1 Dismounting
- drive actuator into 50% position
- delete the current position settings by pressing the drive buttons and on the LCP for at least 5
sec.
- switch-off the voltage supply
7.1.1 PME120AN (for separate electronic unit)
1 2

(68de_0050)

Fig. 30:
- remove the rear actuator cover
- undo the two fastening screws (1) of the position sensor and pull the sensor out of the gears
- disconnect the plug of the cable (2) on the pcb
7.1.2 PME120AI (with integrated electronic unit)

2 3

1 (68de0051) (68de0052)

Fig. 31: Removal of connection pcb at PME120AI Fig. 32: Free access to sensor of PME120AI
- remove the electronic unit (see 6.1.2)
- loosen the 4 screws (1) of the connection pcb and push the pcb aside
- undo the two fastening screws (2) of the position sensor and pull the sensor out of the gears
- disconnect the plug of the cable (3) on the pcb

43/68-10 EN Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 23
 Exchange of position sensor

7.2 Mounting
The toothed gear pair of the position sensor is held in place by a tension spring (3), to ensure sufficient
free motion when the direction of rotation is reversed
- set the stop pin to the center position, as seen in figure 33
- connect the plug of the cable (2) to the sensor pcb
- align the sensor and its gears with the actuator; set the first toothed gear in 11:00 o’clock position
(see Figure 33) onto the drive shaft gear (4)
- slightly move the sensor back and forth to pre-tension the toothed gears until the second toothed
gear snaps in
- fasten the screws (1) tightly.
- fasten the rear cover (or cover with electronic unit for PME120Ai if applies)
- finally readjust the actuator range as described in the setup section of the actuator and / or electronic
unit instruction manual

1 2 4

3
(d0181rxa)

(68de0050)

Fig. 33: Position sensor Fig. 34: Mounting position (example shows PME120AN)

24 Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 43/68-10 EN
 Electrical Test Values

8 Electrical Test Values

NOTICE Check wiring and proper terminal connections before you start the test procedure.
8.1 Test values (position sensor)
The in- / output signals are assigned to terminals of the electronic unit as follows:
term. 17: DC +15 V; +/- 15% (supply); refer to
term 22
signal terminals
term. 18: only used for cable length detection
with EAS822
term. 19: clock
term. 20: data
term. 21: reference potential for position signal
term. 22: reference potential for temp. signal
and supply voltage
term. 23: position proportional voltage signal
(0.4... 4.4 V); refer to term. 21; end po-
sitions of actuator must be adjusted
term. 24: temperature proportional voltage sig-
nal; refer to term. 22;
(∆ V approx. 22.4 mV / °C;
approx. 1.8 V at 20°C)
(see fig. 35 for terminal position)
(68d_0145)

Fig. 35: Signal terminal location

8.2 Test values

Brake voltage: DC 135 V with AC 115/AC230 V mains supply

Motor voltage: check for currents symmetry (i. e. with clip-on ammeter)

8.3 Winding resistance (motor)

STOP Disconnect the voltage supply and the actuator plug prior to any resistance measuring. Make sure that
switching off the actuator does not affect the process.
STOP Depending on the actuator version proceed as follows:
8.3.1 PME120 AI (integrated electronic unit)
- remove the plug
- remove the actuator hood with electronics
- check pins at pin carrier; see fig. 27 for pin reference
8.3.2 PME120 AN (separate electronic unit)
- remove plug
- measure between pins at actuator plug; see fig. 24 + 26 for pin reference

43/68-10 EN Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 25
 Electrical Test Values

mains fuse spare fuse

6, 7, 8
9, 10

fuse against active feed

heater fuse
at 20 mA setpoint input
(only for -25°C version) (68de0016)

Fig. 36:

Integrated electronic unit Separated electronic unit; Resistance

(refer to pin carrier in fig. 27)refer to pin carrier of actuator plug
(see fig. 24 + 26)
Winding resistance ± 5% at 20° C Winding resistance ± 5% at 20° C 3.4 Ohm
(motor); pin. 6-7 / 7-8 / 6-8 (motor); pin. 1-2 / 2-3 / 1-3
Winding resistance ± 5% at 20° C Winding resistance ± 5% at 20° C 50 Ohm
(brake); term. 9 - 10 (brake); term. 9 - 10
Table 4: Winding resistance

26 Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 43/68-10 EN
 Failure detection

9 Failure detection
9.1 LED signals at local control panel
Provided the electronic unit is supplied with voltage (green LED on LCP „ON“), the red LED on the local
control panel provide some basic status information:
both LED are „OFF“ actuator is ok
both LED are „ON“ actuator is in bootstrap mode (e. g. during data loading procedure); in
this case the actuator is not available for the positioning loop
both LED flash simultaneously actuator end positions are not set; actuator does not accept com-
mands to the digital inputs and can only be moved via drive buttons on
the local control panel (see also electronic unit instruction)
both LED flash alternatively actuator failure (e. g. out of adjusted range); actuator can not be moved
via command buttons or commands from the process control system;
reset is only possible once the failure reason is eliminated

(68d_0110)

Fig. 37: Local Control Panel

10 Trouble Shooting
NOTICE Check wiring, polarity and all plug and terminal connections before you start detailed trouble shooting.
The following chapter specifies various possible failure events or conditions, which should be checked.
Follow the block diagrams to find the associated reason, result or measure to solve the malfunction.
Example:
condition: E6.1 LED signal: Failure
possible failure: E6.3 sensor memory failure
one reason / measure to solve the malfct. R6.2 replace sensor; see chpt. 7
(in this case the user will find more detailed in-
formation about the sensor replacement in
chapter 7)

43/68-10 EN Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 27
 Trouble Shooting

10.1 General

Actuator does not move

E1.1: LEDs signalize „malfunction“

(see chpt. 9)

No Yes R1.1: see chpt. 10.6

E1.2: power LED on local control panel is „ON“

No Yes
R1.2: see chpt. 10.2

E1.3: internal mains fuse ok?

No Yes

E1.4: power supply „ON“?

No Yes

E1.5: voltage level acc. to data label?

No Yes

R1.3: replace fuse R1.4. Hook-up the volt- R1.5: Use electronic R1.6: Electronic unit de-
see E1.5 if the fuse age supply unit for appropriate volt- fective;
blows again check external fuse age level or ensure ap- replace electronic unit
propriate voltage level

28 Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 43/68-10 EN
 Trouble Shooting

10.2 Failures at brake, fuse or wiring

E1.1: Yes E 2.1: actuator can be moved

over entire range via drive but-
tons on LCP

No Yes
R 2.1 See 10.3

E2.2: Motor / brake wiring acc. to wiring diagram? (see chpt. 6.3

No Yes

E 2.3: Disconnect actuator and valve. Actuator can be moved?

No Yes

E3.4:Motor winding resistance

acc. to table 4

No Yes

E 3.5: Check brake. „Click

sound“ audible?

No Yes

E 3.7: Remove motor (Oil!) Gearing

smoothly rotable over entire range?

No Yes

R 2.2: R 2.3: R 2.4: R 2.6: R 2.7: R 2.8:

Correct Motor de- Adjust Act. runs Motor / Valve runs
wiring fective brake gap mech. brake hard
hard defective

43/68-10 EN Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 29
 Trouble Shooting

10.3 Operation mode (MAN / AUT)

E 2.1: Yes E 3.1: Actuator is set to AUTO

mode via software (A 1 chpt. 10.9)

No Yes

E 3.2: „Simulation“ mode

active? (D 3 chpt. 10.9)

Yes No

E 3.3: „Test“ mode ac-

tive? (D 2 chpt. 10.9)

Yes No

R 3.1: Set actuator to R 3.2: De-activate R 3.3: De-activate R 3.4 R 3.5

AUTO mode via confi. soft- „Simulation“ mode „Test“ mode see chpt. 10.4 see chpt. 10.5
ware. (D 3 chpt. 10.9) (D 2 chpt. 10.9) (pos. after (pos. after
setpoint) step control-
If the actuator is still in (C 4 chpt. ler)
MAN mode after switching 10.9) (C 4 chpt.
on again, change the set- 10.9)
tings for „Behaviour after
voltage recovery“ to
„Switch to AUTO“
(C 2 chpt. 10.9)

30 Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 43/68-10 EN
 Trouble Shooting

10.4 Input configuration

E 3.3: No E 4.1: actuator is set to AUTO mode

(A 1 chpt. 10.9)

No Yes

E4.2: Fuse for setpoint signal ok? see chpt. 6.5

No Yes

E4.3: Setpoint signal measurable and polarity

ok?

No Yes

E4.4: Setpoint function

adjusted to „analog
setpoint“?
(C 4 chpt. 10.9)

No Yes

E4.5: Permanent drive

command at dig. input
2 or 3?

No Yes

R4.1: R4.2: R4.3: R4.4: R4.5: R4.6:

De-activate digital Replace Provide Select „analog Electronic De-activate
input contacts fuse setpoint signal setpoint“ in user unit permanent
(C 4 chpt. 10.9) interface defective drive com-
(C 4 chpt. 10.9) mand

Provide „DC 24 V
„high“ signal to dig.
input 1

43/68-10 EN Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 31
 Trouble Shooting

10.5 Operation behind step controller

R 3.5: No E5.1: actuator is set to MAN mode (user

interface; A 1 chpt. 10.9)

No Yes

E4.2: pulses are measurable and po-

larity ok?

No Yes

R5.1: provide controller R5.2: Electronic unit R5.3: Select „AUTO“ mode
signal and check wiring defective in user interface
(A 1 chpt. 10.9)

10.6 Failure Diagram

E 1.1: Yes E6.1: LED signal: Failure

E6.2 sensor E6.3: E6.4 E6.5: E6.6: E6.7: E6.8:

failure sensor RAM flash CPU fr. conv. pos. loop
memory failure failure failure failure monitor-
failure ing

R6.1
R6.2 R6.3 R6.4
check wiring
replace replace electronic unit see 10.7
between
sensor
electronic
see chpt. 7
unit and ac-
tuator
pos. sensor
out of oper.
range;
see. chpt. 9;
replace sen-
sor
see chpt. 7

32 Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 43/68-10 EN
 Trouble Shooting

10.7 Failure due to response of positioning loop monitoring

R 6.4: E 7.1: Failure due to positioning loop monitoring

(C 5 chpt. 10.9)

E7.2 E7.3 E7.4 E7.5

speed monitoring stand still wrong moving Moves too heavy in
monitoring direction end position
(rough-running)

R7.1 R7.2 R7.3 R7.4

actuator can not fol- actuator has left the actuator has moved check end position
low the setpoint position without into wrong direction conditions (deposits
with adjusted speed command may cause friction
rough-running and slow down the
actuator actuator)

10.8 General
Actuator runs with creeping speed in one or both end positions
- check the software settings for leaving the end position; if „break-away“ is activated, the actuator
moves with increased torque / force but with reduced speed
Imprecise behaviour in step-control mode
- use graphical user interface to check function assignment of digital input settings; select „step
controller“
Actuator over-runs end position(s)
- change the software settings for the end position behaviour to „Position-dependent switch-off“
and enter the associated switch-off position
- adjust the mechanical limit stops in order to avoid an end position over-run
Actuator moves into an end position once it reaches a setpoint
- de-activate „close tight“ in the software settings for modulating control near the end position
Actuator position does not correspond to setpoint although the position signal corresponds to
the setpoint
- de-activate the progammable setpoint in the software settings for the setpoint characteristic
Actuator follows the setpoint only within a limited range
- de-activate „split range“ in the software settings for the setpoint characteristic

43/68-10 EN Electrical Part Turn Actuators for Continuous Modulating Control PME120AI / PME120AN (Contrac) 33
 Trouble Shooting

10.9 User Interface Menus

Fig. 38: Trouble shooting related menus in the user interface (digitally manipulated screen shot)
The following table represents the first 2 menu levels (see also fig. 38) of the graphical user interface
as far as the trouble shooting is concerned. Some of the subjects in chpt. 10 refer to the user inter-
face. Use the numbering in table 5 to facilitate the navigation. The user interface software does not
use any numbering in the menus.
A Operate B Diagnosis C Configure D Service
A 1 Positioner B 1 Status C 1 General D 1 Initial setting
A 2 Controller B 2 Alarms / Failures C 2 Operation D 2 Test
B 3 Maintenance C 3 End position behaviour D 3 Signal Simulation
B 4 Load C 4 Input / Output D 4 Calibration of anal. output
C 5 Monitoring
C 6 Controller
C 7 Actuator specific data
C 8 Data overview

Table 5: Trouble shooting related menus of the user interface

ABB has Sales & Customer Support The Company’s policy is one of continuous product
expertise in over 100 countries worldwide. improvement and the right is reserved to modify the
information contained herein without notice.
www.abb.com/instrumentation
Printed in the Fed. Rep. of Germany (12. 05)

© ABB 2005
43/68-10 EN

ABB Ltd. ABB Inc. ABB Automation Products GmbH

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