P1 Manuel
P1 Manuel
The AirMaster P1 has been custom designed and engineered as a cost efficient control solution for small to medium sized rotary, 1
vane and reciprocating air compressors up to 65Bar (950psi).
Interface:
Keys:
Reset Enter
Display:
Construction:
Cast Aluminum alloy housing, process black corrosion protective coating and corrosion protected steel rear plate.
IP65 keypad overlay and panel mount sealing.
Mounting:
144 28 10
Front panel mounting (1.0mm to A2 A1
Connections:
2 2
0.5mm to 1.5mm CSA wire 96
screw terminals.
R1C R1 C R2 R3 R4
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0Vac
ES
24Vac
24Vac 0Vac
It is recommended the 0Vac power supply is securely bonded to a suitable earth connection.
Polarity of power supply connection to the controller is important.
Emergency Stop (ES) activation is detected on R1C (relay #1 common pin); 24Vac only.
If common 24Vac power supply is used for motor contactor coil energisation the ‘VA’ power supply rating must be increased
accordingly.
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Main 24Vac power supply is used for digital input activation (digital inputs are 24Vac detecting).
User Display: 3
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Default User Menu Item; Temperature ( C/ F menu selectable)
Hours Until Service Due (countdown timer based on total run hours)
If a timer event occurs (run-on, stop, blowdown or auto restart time) the User item display will show the time countdown in
seconds. While a countdown is being displayed normal User items can still be viewed; press Down.
The display will default back to the User Temperature item after a short period of no key activity or after a timer event has completed.
If operating in ‘Pressure Switch Mode’ the main display will show the detected temperature and the default User Menu item will
be total run hours. Pressure is not displayed in pressure switch mode.
Status Display:
Standby: The compressor is in a started state but is not running. The compressor will automatically re-start
and load when pressure falls to the lower pressure set point; or a remote load signal.
Fault Conditions:
If a Fault condition occurs the Fault triangle symbol will switch on steady (Alarm/Warning) or flash (Trip/Shutdown)
The User menu display item will show a ‘Fault Code’ dependant on the fault.
Fault Codes
The Service Due countdown timer can be reset to any hours value, dependant on the required service interval. The timer will
countdown dependant on total run hours.
Menu Routine:
Parameters, Values and Options can be adjusted and set using the Menu Routines. There are two menu lists:
1) Operational Menu – Access Code “0009”
2) Configuration Menu – Access Code “0121”
To access a menu stop the compressor first then press the Up and Down buttons simultainiously.
After several seconds the display will show four “0” characters; the first character will flash. Press Up or Down to adjust the first
character to match the first character of the required access code. Press Enter to increment to the second code character.
When all four access code characters have been set, and the last code character is flashing, press Enter. If the
access code is correct for access to one of the two menus the first menu item of the appropriate menu will be displayed. If the access
code is incorrect the display will return to the normal operational display.
To select a menu item for adustement press Up or Down until the menu item is displayed. To adjust an item setting press Enter, the
value or option will flash. Press Up or Down to adjust as required then press Enter to store in memory.
To exit a menu and return to the normal operational display, at any time, press Reset.
Any adjustement that has not be entered to memory will be abandoned and the previous setting maintained.
Operational Menu: 5
Item Description Range Default
01: 1.Pu Upper Pressure Set point 1 to 68bar 7.0bar
02: 1.PL Lower Pressure Set point 0.8 to 67.8bar 6.8 bar
03: 1.rt Run-On-Time 0 to 600 seconds 300 seconds (5 minutes)
04: 1.bt Blowdown Time 0 to 120 seconds 30 seconds
05: 1.St Stop Time 0 to 30 seconds 10 seconds
06: 1.P- Pressure Display Units bar/psi bar
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07: 1.t- Temperature Display Units C/ F C
08: 1.At Auto Resetart Time 0 to 120 seconds 10 seconds
09: 1.H3 General Service Hours -99999 to 99999 2000 hours
10: 1.H4 Air Filter Service Hours -99999 to 99999 2000 hours
11: 1.H5 Oil Filter Service Time -99999 to 99999 4000 hours
12: 1.H6 Seperator Filter Service Hours -99999 to 99999 4000 hours
13: 1.H7 Oil Change Service Hours -99999 to 99999 4000 hours
Pressure Control:
The compressor will maintain pressure between the set Pu (Unload Pressure Set Point) and PL (Load Pressure Set Point. When Pressure
reaches the set ‘Pu’ level the compressor will unload. When pressure falls to the ‘PL’ level the compressor will load.
Run-On-Time:
When the compressor unloads the run-on-timer is initiated. If the set run-on-time expires before the compressor loads again the main
motor will stop and the compressor enter the Standby state.
Blowdown Timer:
When the main motor stops the compressor will allow a period of blowdown (the Blowdown Time) before a motor start can be re-
initiated. A motor re-start is inhibited during this time period. This time is intended to allow internal pressure (or sump pressure) to be
vented before a motor start sequence is permitted. Set to 0(zero) seconds if not required.
Stop Time:
When the Stop button is pressed the compressor will unload and the main motor will continue to run for the set Stop Time. This time is
intended to allow internal pressure (or sump pressure) to reduce before the compression element is stopped; preventing potential oil
blow-back through the compression element and air filter. The stop time is initiated from the moment the compressor is unloaded. If
the compressor has been offload for a period of time prior to a stop command the time is automatically reduced accordingly. If the
compressor is stopded after the compressor has been running offload for the stop time, or longer, the compressor is stopped
immediately; no stop time is applied.
Set to 0(zero) seconds if not required.
Configuration Menu: 6
Item Description Range Default
1: 2.Sd Motor Star/Delta Time 0.0 to 20.0 seconds 5.0 seconds
2: 2.Ad Network Address (RS485 option) 1 to 12 1
3: 2.LS Load Source 0=local, 1=RS485 0=local
4: 2.SS Start Source 0=local, 1=RS485 0=local
5: 2.PA High Pressure Alarm Level 1.0 to 68.0bar 7.6bar
6: 2.PF High Pressure Trip Fault Level 0.8 to 67.8bar 8.0bar
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7: 2.tA High Temperature Alarm Level 50 to 248 C 110 C
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8: 2.tF High Temperature Trip Fault Level 52 to 250 C 120 C
9: 2.d2 Digital Input ‘C2’ configuration
2: Eno - Shutdown Trip @ 24Vac (0Vac=OK)
3: Enc - Shutdown Trip @ 0Vac (24Vac=OK) - default
10: 2.d3 Digital Input ‘C3’ configuration
2: Eno - Shutdown Trip @ 24Vac (0Vac=OK)
3: Enc - Shutdown Trip @ 0Vac (24Vac=OK) - default
11: 2.d4 Digital Input ‘C4’ configuration
2: Eno - Shutdown Trip @ 24Vac (0Vac=OK)
3: Enc - Shutdown Trip @ 0Vac (24Vac=OK) - default
12: 2.d5 Digital Input ‘C5’ configuration
0: Ano - Alarm @ 24Vac (0Vac=OK) - default
1: Anc - Alarm @ 0Vac (24Vac=OK)
2: Eno - Shutdown Trip @ 24Vac (0Vac=OK)
3: Enc - Shutdown Trip @ 0Vac (24Vac=OK)
13: 2.d6 Digital input ‘C6’ configuration
0: Ano - Alarm @ 24Vac (0Vac=OK) - default
1: Anc - Alarm @ 0Vac (24Vac=OK)
2: Eno - Shutdown Trip @ 24Vac (0Vac=OK)
3: Enc - Shutdown Trip @ 0Vac (24Vac=OK)
4: rLu - Remote Load - Unload (24Vac=Load)
5: PSr - Pressure Switch Regulation (24Vac=Load)
6: rSS – Remote Start – Stop (24Vac=Start)
• The Star motor contractor is energised 200ms before the Main motor contactor.
• The Star to Delta contactor transition time is fixed at 50ms.
Local pressure control (Pu and PL) is automatically resumed if RS485 communications is disrupted or lost. When RS485
communications are resumed, pressure control is automatically reverted back to RS485 control.
Local pressure continues to be displayed; high pressure Alarm (Warning) and shutdown Trip settings remain active.
A2 A1
- + C6 - - - C2
PS
24Vac Di
The local detected pressure input ‘A1’ is ignored and pressure is not displayed. The main display value will show the detected
Temperature. There is no requirement to connect a 4-20mA pressure sensor to analogue input ‘A1’ in this mode.
The high pressure Alarm (Warning) and shutdown Trip settings are ignored. It is recommended alternative excess pressure
shutdown, utilising a shutdown digital input, is implemented.
Pressure Switch Mode is intended for compressor units that are equipped with a pressure switch but are not equipped with a pressure
sensor.
1) Expose the sensor to atmosphere (0.0bar gauge). Adjust the ‘Po’ offset value until the displayed pressure is 0.0bar.
2) Apply a known accurate pressure to the sensor. The pressure can be static or dynamic (changing). Adjust the ‘Pr’ range value
until the displayed pressure matches the applied pressure. The applied pressure can be any value but It is recommended the
pressure be equivalent to, or greater than, normal working pressure to ensure an accurate calibration.
Detected pressure is displayed when the ‘Po’ and Pr’ menu items are selected for adjustment.
The controller will automatically adjust the pressure fault levels, and the pressure set points, to ensure they remain within the
pressure sensor range. Always check and comfirm these values after a pressure sensor ‘offset’ or ‘range’ adjustment.
occurs the controller will display an Alarm indication (A3123 Err). The Alarm will self reset when temperature increases above the set 10
limit. The alarm cannot be manually reset. This feature cannot be disabled.
This function will not stop or inhibit a compressor from operating if the main motor is already running; the function only applies when
the main motor is stopped and the controller is required to initiate a motor start sequence.
01 – Alarm De-energized for any active Alarm fault (2.tL and 2.tr value not including)
02 – Shutdown De-energized for any active Shutdown fault (2.tL and 2.tr value not including)
03 – Group Fault De-energized for any active Alarm, Star/Run Inhibit or Shutdown fault
04 – Alarm Service De-Energized for any Alarm fault or Service Due alarm (2.tL and 2.tr value not including)
05 – Service Energized for Service Due alarm only
06 – Heater Energizes if detected temperature falls below set low temperature run inhibit “2.tr”
De-energizes if detected temperature increases above set low temp run inhibit + 2°C
Can be used to energize anti-condensate heater contactor or as low temperature warning auxiliary
output.
07 – Fan Energized in all RUNNING states except ‘motor start’ “2.Sd”
Can be used to energize internal and/or external cooling fan motor contactor
08 – Standby Energized in ‘Standby’ and ‘Blowdown’ states
09 – Running Energized in all RUNNING state conditions
10 – Loaded Energized in all LOADED state conditions
11 – Started Energized in all STARTED state conditions
12 – Fan (temp ctl) Enabled to operate in all RUNNING states except ‘motor start’ If enabled to operate the output will only
energize if delivery temperature exceeds the set ‘Fan High’ temperature setting. If delivery temperature
falls below the set ‘Fan Low’ temperature setting the output will de-energize. Once energized the output
will remain energized for a minimum of the set ‘Fan Minimum Run Time’ regardless of delivery
temperature. Can be used to energize internal and/or external cooling fan motor contactor; the minimum
run time is intended as a means of limiting Fan motor starts-per-hour.
Service Function:
To force the compressor in to an offload condition, regardless of pressure level, press and hold RESET for 5 seconds.
• The lower display will indicate ‘OFF’ (press DOWN to view the temperature or other user menu items)
• The load status symbol will flash (without the delivery arrow)
• The motor run-on-timer is inhibited; the compressor will continue to run indefinantly in an offload condition.
To exit the service function, and resume normal operation, press RESET.
The service function will self cancel if the compressor is stopped; normal operation will resume when the compressor is re-started.
Temperature Sensor:
signal
A2+
The P1 is designed as standard to use a KTY type 0VDC
A2-
temperature sensor. A KTY sensor offers a calibration
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temperature range of –32 C to 150 C.
Special builds (on request) can accommodate 10k NTC, PT100 or PT1000 type sensors in instances where a different or higher
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temperature range (-50 C to 250 C) is required; reciprocating compressor application for example.
Passwords:
Passwords can be change only with fabric password level.
ATTENTION !!!
L2 L1 X06
L1
3 X06 3 1 L1
1 5 2 L2
L2
2 1 RS485
4
X06
2
RS485
RS485
X06
X05
Ensure the RS485 PCB cable plugs are tight and secure.
Handle with care - ensure the RS485 PCB cable plugs are not pulled from the sockets during this procedure.
Multi485 Protocol:
The port utilises the CMC Multi485 protocol enabling connectivity to a range of system management products, remote
communications monitoring and control options or MODBUS RTU connectivity using a MODBUS Gateway module.
Fault Codes: 12
Fault conditions are separated in to two categories:
A: Alarm (Warning) – symbol illuminated on steady, the compressor will continue to operate
A:3123 Run Inhibited - temperature is below set low temperature run inhibit limit
(will self reset when temperature increases above the set temperature limit; cannot be manually reset)
A:3423 Load Inhibited - temperature is below set low temperature load inhibit limit
(will self reset when temperature increases above the set temperature limit; cannot be manually reset)
A: 4804 General Service hours time expired, service due (reset countdown timer)
A: 4814 Air filter hour’s time expired, service due (reset countdown timer)
A: 4824 Oil filter hour’s time expired, service due (reset countdown timer)
A: 4834 Air/Oil Separator hours time expired, service due (reset countdown timer)
A: 4844 Oil service hours time expired, service due (reset countdown timer)
E:0115 Pressure Sensor Fault: 4-20mA signal out-of-range (< 3.8mA or > 20.8mA)
E:0119 Excess Pressure: shutdown limit exceeded
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E:0125 Temperature Sensor Fault: signal out-of-range (< -50 C or > 250 C)
E:0129 Excess Temperature: shutdown limit exceeded
Mounting Options: 13
131.44
83.44
131.44
83.44
not to scale