6.

Terminal Wiring Diagrams NOTE

Do not use unassigned terminals as relay terminals.

UT450 Standard Type (Model UT450-0 or UT450-3 ) or Heating/Cooling Type(Model UT450-2 ) UT450 Position Proportional Type (Model UT450-1 or UT450-4 )
*Wiring can only be carried out for controllers with PV input * Not configured at factory before shipment Receiving 4-20 mA DC Current *Wiring can only be carried out for controllers with 24 V
RS-485 communication * Wiring can only be carried out
RS-485 communication * Wiring can only be carried out * Wiring can only be carried out for PV input * Not configured at factory before shipment Receiving 4-20 mA DC Current
24 V DC loop power supply. See Initial Settings User’s Manual , Signals with the Controller DC loop power supply.
for controllers with communication controllers with remote input. for controllers with communication See Initial Settings User’s Manual , Signals with the Controller
24 V DC loop functions. for more information. * When receiving 4-20 mA DC current signals, 24 V DC loop
23 SDB(+) Remote input functions. for more information. * When receiving 4-20 mA DC current signals,
power supply Maximum baud rate: 9600 bps TC input RTD input set the PV input type to 1-5 V DC (setpoint “41”). power supply 23 SDB(+) Maximum baud rate: 9600 bps TC input RTD input set the PV input type to 1-5 V DC (setpoint “41”).
24 SDA(-) * Wiring can only be carried out for
21 + 11 A
+ 43 Specify in a range of 12 + 12 + + 43 24 SDA(-) controllers with remote input. 11 A
21.6-28.0VDC 1-5 V DC, 0-2 V DC, 21.6-28.0VDC 12 +
(30 mA DC max.) 25 RDB(+) or 0-10 V DC. 12 b 250 4-20mA Remote input 12 +
- 44 22 - (30 mA DC max.)
25 RDB(+)
13 - - 44 12 b 250 4-20mA
13 -
26 RDA(-) Default: 1-5 V DC 13 B 13 - 13 -
26 RDA(-) 21 + 13 B
Specify in a range of
27 SG mV/V input Note: Connecting a 250 resistor to the terminals is 1-5 V DC, 0-2 V DC,
Note: Select this option from Position proportional control output 27 SG or 0-10 V DC. mV/V input
Control output
optional. 22 - Note: Connecting a 250 resistor to the terminals is
the OT parameter. Model: X010-250-2 (resistor with M3.5 crimp-on terminal
Relay contact output Feedback input optional.
Relay contact output *Time proportional PID relay contact 12 + lugs) Default: 1-5 V DC
Model: X010-250-2 (resistor with M3.5 crimp-on terminal
output is configured at factory 1 41 31 21 11 H
48
0%
47 12 + lugs)
NC 1 before shipment. 13 - (Direct)
2 42 32 22 12 L 1 41 31 21 11 13 -
NO 2 (Reverse)
49 46
3 43 33 23 13 2 42 32 22 12
COM 3 COM 50 100%
45
4 44 34 24 14 Retransmission output 3 43 33 23 13
* PV retransmission is configured at factory
Contact rating: 250 V AC, 3 A Contact rating: 250 V AC, 3 A Resistance: 100 to 2.5 k * PV retransmission is configured at factory
5 45 35 25 15 before shipment. 30 V DC, 3 A (resistance load) 4 44 34 24 14 Retransmission output
30 V DC, 3 A (resistance load) before shipment.
Control output 14 +
CAUTION 6 46 36 26 16 Current/voltage Note:Select this option 4-20 mA DC 5 45 35 25 15
Power supply
Before carrying out wiring, turn off the power pulse output from the OT 15 - 14 +
Power supply 7 47 37 27 17 Load resistance: 600 or less 6 46 36 26 16
to the controller and check that cables to be parameter. Power supply CAUTION 4-20 mA DC
L connected are not alive with a tester or the like
8 48 38 28 18 Before carrying out wiring, turn off the power 15 -
8 because there is a possibility of electric shock. 16 + 15 V DC loop power supply * If 15 V DC loop power supply is used, Power supply to the controller and check that cables to be 7 47 37 27 17 Load resistance: 600 or less
4-20 mA DC,
9 49 39 29 19 voltage pulse retransmission output cannot be used. L
connected are not alive with a tester or the like
N
9 17 -
(12 V) 8 because there is a possibility of electric shock. 8 48 38 28 18 * If 15 V DC loop power supply is used,
15 V DC loop power supply
10 50 40 30 20 14 + retransmission output cannot be used.
10 14.5-18.0VDC N 9 49 39 29 19
(21 mA DC max.) 9
15 - 10 50 40 30 20 14 +
Allowable range: 100 to 240 V AC ( 10%) 14.5-18.0VDC
(free voltage) 10 (21 mA DC max.)
* DIS is a setup parameter.
50/60 Hz shared
Changing DIS setpoint allows you to change the function of external contact input. 15 -
Allowable range: 100 to 240 V AC ( 10%)
Alarm output Correspondence between parameter DIS and external contact input functions (free voltage)
50/60 Hz shared * DIS is a setup parameter.
UT When DIS=0 When DIS=1 (Factory-shipped setting) When DIS=2 When DIS=3 When DIS=4 UT Contact +5V Transistor contact Changing DIS setpoint allows you to change the function of external contact input.
Alarm-1 output AL1 6
AUTO when DI1=ON AUTO when DI1=ON STOP when DI1=ON When switching target DI1 Alarm output
No function SP 1 to 4: DI1 19 19 Correspondence between parameter DIS and external contact input functions
MAN when DI1=OFF MAN when DI1=OFF RUN when DI1=OFF +5V
Alarm-2 output AL2 5
1.SP 2.SP3.SP 4.SP UT When DIS=0 When DIS=1 (Factory-shipped setting) When DIS=2 When DIS=3 When DIS=4 Contact +5V Transistor contact
DI2 Alarm-1 output UT
Relay

STOP when DI2=ON 2.SP when DI2=ON 2.SP when DI2=ON DI1 OFF ON OFF ON
18 AL1 6
No function DI2 18 +5V AUTO when DI1=ON AUTO when DI1=ON STOP when DI1=ON When switching target DI1
RUN when DI2=OFF 1.SP when DI2=OFF 1.SP when DI2=OFF DI2 OFF OFF ON ON
No function SP 1 to 4: DI1 19 19
Alarm-3 output AL3 4 DI3 MAN when DI1=OFF MAN when DI1=OFF RUN when DI1=OFF +5V
When switching target SP 1 to 8: STOP when DI3=ON AUTO when DI3=ON STOP when DI3=ON DI3 40 40 Alarm-2 output AL2 5 1.SP2.SP3.SP 4.SP

Relay
No function +5V DI2
1.SP 2.SP 3.SP 4.SP 5.SP 6.SP7.SP 8.SP RUN when DI3=OFF MAN when DI3=OFF RUN when DI3=OFF STOP when DI2=ON 2.SP when DI2=ON 2.SP when DI2=ON DI1 OFF ON OFF ON
DI2 18 18
Common COM 7 DI3 ON OFF ON OFF ON OFF ON OFF DI4 No function RUN when DI2=OFF 1.SP when DI2=OFF 1.SP when DI2=OFF DI2 OFF OFF ON ON +5V
No function DI4 OFF ON ON OFF OFF ON ON OFF No function No function AUTO when DI4=ON
DI4 39 +5V 39 Alarm-3 output AL3 4 DI3
MAN when DI4=OFF When switching target SP 1 to 8: STOP when DI3=ON AUTO when DI3=ON STOP when DI3=ON DI3 40 40
* Alarm-4 output is
Transistor

DI5 OFF OFF OFF ON ON ON ON OFF +5V

Alarm-4 output AL4 34 DI5 No function RUN when DI3=OFF MAN when DI3=OFF RUN when DI3=OFF
COM 7
DI6 OFF OFF OFF OFF OFF OFF OFF ON 38 1.SP2.SP 3.SP4.SP 5.SP 6.SP7.SP 8.SP
optional function No function No function No function No function DI5 38 +5V Common DI4
* If all of the contact inputs are set to OFF, DI3 ON OFF ON OFF ON OFF ON OFF AUTO when DI4=ON DI4 39 39
DI6 No function No function No function +5V
Common COM 35 the controller uses the immediately DI6 37 37 DI4 OFF ON ON OFF OFF ON ON OFF MAN when DI4=OFF

Transistor
No function No function No function No function * Alarm-4 Alarm-4 output AL4 34
preceding target setpoint. DI5 OFF OFF OFF ON ON ON ON OFF DI5
COM output is No function No function No function DI5 38 +5V 38
Relay contact rating: 240 V AC, 1 A 20 DI6 OFF OFF OFF OFF OFF OFF OFF ON No function
No function Common Common Common Common COM 20 optional
30 V DC, 1 A (resistance load)
Common COM 35 * If all of the contact inputs are set to OFF, the controller DI6
Transistor contact rating: 24 V DC, 50 mA function No function No function No function No function DI6 37 37
+5V uses the immediately preceding target setpoint.
Remote when R/L=ON Remote when R/L=ON Remote when R/L=ON Remote when R/L=ON Remote when R/L=ON Relay contact rating: 240 V AC, 1 A COM
* OT is a setup parameter. Local when R/L=OFF Local when R/L=OFF Local when R/L=OFF Local when R/L=OFF Local when R/L=OFF R/L COM 20 20
R/L 28 28 30 V DC, 1 A (resistance load) No function Common Common Common Common
You can change the settings of the parameter OT to change the Transistor contact rating: 24 V DC, 50 mA
COM +5V
control output type. Common Common Common Common Common COM 30 30 Remote when R/L=ON Remote when R/L=ON Remote when R/L=ON Remote when R/L=ON Remote when R/L=ON
See Initial Settings User’s Manual , for more information. Local when R/L=OFF Local when R/L=OFF Local when R/L=OFF Local when R/L=OFF Local when R/L=OFF R/L 28 R/L
Contact rating: 12 V DC, 10 mA or more 28
Correspondence between parameter OT and control output types
COM
OT=0 (factory-set default) OT=1 OT=2 OT=3 NOTE: External Contact Input Common Common Common Common Common COM 30 30
If the power is turned on when the external contact input is OFF, the
Time proportional control Time proportional control Current output On-off control mode (SPN, R/L, or A/M) existing before the power is turned off will be Contact rating: 12 V DC, 10 mA or more
Relay output (terminals 1 , 2 and 3 ) Voltage pulse output (terminals 16 and 17 ) (terminals 16 and 17 ) Relay output (terminals 1 , 2 and 3 ) continued. (except for RUN/STOP) NOTE: External Contact Input
If the power is turned on when the external contact input is OFF, the mode (SPN, R/L, or A/M) existing
before the power is turned off will be continued. (except for RUN/STOP)
UT450 Heating/Cooling Type (Model UT450-2 )
Note: Select this option from the OT parameter.
UT420 Standard Type (Model UT420-0 )
RS-485 communication * Wiring can only be carried out PV input * Not configured at factory before shipment Receiving 4-20 mA DC Current
Cooling-side control Cooling-side control PV input * Not configured at factory before shipment
for controllers with communication See Initial Settings User’s Manual , Signals with the Controller RS-485 communication * Wiring can only be carried out * Wiring can only be carried out for Receiving 4-20 mA DC Current
output output See Initial Settings User’s Manual ,
functions. for more information. * When receiving 4-20 mA DC current signals, for controllers with communication controllers with remote input. Signals by the Controller
Current/voltage pulse output Relay contact output 23 SDB(+) Maximum baud rate: 9600 bps set the PV input type to 1-5 V DC (setpoint “41”). functions. for more information. * When receiving 4-20 mA DC current signals,
TC input RTD input Remote input
*Time proportional PID * Wiring can only be carried out for 23 SDB(+) Maximum baud rate: 9600 bps set the PV input type to 1-5 V DC (setpoint “41”).
NC 48
TC input RTD input
relay contact output is 24 SDA(-) controllers with remote input. 11 A
+ 46 12 + 24 SDA(-)
4-20 mA DC, configured at factory Remote input 12 + 21 + 11 A
voltage pulse NO 49 25 RDB(+)
Specify in a range of 12 +
(12 V) before shipment. 12 b 250 4-20mA 1-5 V DC, 0-2 V DC, 12 +
- 47 25 RDB(+)
13 - 13 - 22 - or 0-10 V DC.
12 b 250 4-20mA
COM 50 26 RDA(-) 21 + 13 B 13 - 13 -
Specify in a range of 26 RDA(-) Default: 1-5 V DC
13 B
Contact rating: 250 V AC, 3 A 1-5 V DC, 0-2 V DC,
30 V DC, 3 A (resistance load) 27 SG 22 - or 0-10 V DC. mV/V input Note: Connecting a 250 resistor to the terminals is
optional. 27 SG mV/V input
Heating-side control output Default: 1-5 V DC Note: Connecting a 250 resistor to the terminals is
Model: X010-250-2 (resistor with M3.5 crimp-on terminal optional.
Relay contact output Note: Select this option from the OT parameter. 12 + lugs) Control output Note:Select this option from Model: X010-250-2 (resistor with M3.5 crimp-on terminal
*Time proportional PID relay contact the OT parameter. 12 +
1 41 31 21 11 lugs)
NC 1 output is configured at factory 13 - Relay contact output *Time proportional PID relay contact
before shipment. 2 42 32 22 12 output is configured at factory 1 21 11 13 - 15 V DC Power Supply Wiring to Two-wire Sensor
NO 2 NC 1
3 43 33 23 13 before shipment. 2 22 12
COM 3 Retransmission output * PV retransmission is configured at factory NO 2
4 44 34 24 14 3 23 13 Retransmission output * PV retransmission is configured
before shipment. 12
Contact rating: 250 V AC, 3 A
5 45 35 25 15 COM 3 24 at factory before shipment.
30 V DC, 3 A (resistance load)
14 + 4 14 External PV input
Heating-side control output Contact rating: 250 V AC, 3 A 14 + resistor 100
Power supply 6 46 36 26 16 4-20 mA DC 0.4 to 2.0 V DC signal
CAUTION Current/voltage Note:Select this option 30 V DC, 3 A (resistance load) 5 25 15 (Note)
Power supply 15 - Control output 4-20 mA DC
Before carrying out wiring, turn off the power 7 47 37 27 17 pulse output from the OT Load resistance: 600 or less 15 - 13
to the controller and check that cables to be CAUTION 6 26 16 Current/voltage Note:Select this
L parameter. Power supply Load resistance: 600 or less
8 connected are not alive with a tester or the like pulse output option from
8 48 38 28 18 15 V DC loop power supply * If 15 V DC loop power supply is used, Before carrying out wiring, turn off the power 7 27 17
N
because there is a possibility of electric shock. 16 + 4-20 mA DC, Power supply to the controller and check that cables to be the OT
9 9 49 39 29 19 voltage pulse retransmission output cannot be used. connected are not alive with a tester or the like
15 V DC loop power supply * If 15 V DC loop power supply
8 28 18 parameter.
16 +
L
17 - (12 V)
8 because there is a possibility of electric shock. 4-20 mA DC, is used, retransmission output Two-wire transmitter
10 50 40 30 20 14 +
10 14.5-18.0VDC
9 29 19
voltage pulse cannot be used. 14
(21 mA DC max.) N 17 -
(12 V) 14 +
15 - 9 14.5-18.0VDC Loop power
Allowable range: 100 to 240 V AC ( 10%) NOTE: External Contact Input
10 30 20 (21 mA DC max.)
4-20mADC supply
(free voltage)
* DIS is a setup parameter.
If the power is turned on when the external contact input is OFF, the 15 -
50/60 Hz shared mode (SPN, R/L, or A/M) existing before the power is turned off will be 10 14.5 to
Changing DIS setpoint allows you to change the function of external contact input. continued. (except for RUN/STOP)
Allowable range: 100 to 240 V AC ( 10%) 15 18.0 V DC
Alarm output Correspondence between parameter DIS and external contact input functions (free voltage)
* DIS is a setup parameter.
UT When DIS=0 When DIS=1 (Factory-shipped setting) When DIS=2 When DIS=3 When DIS=4 UT Contact +5V Transistor contact 50/60 Hz shared
Alarm-1 output AL1 6 Changing DIS setpoint allows you to change the function of external contact input.
AUTO when DI1=ON AUTO when DI1=ON STOP when DI1=ON When SP
switching target DI1 Note: Connecting a 100 resistor to the terminals is optional.
No function 1 to 4: DI1 19 19 Correspondence between parameter DIS and external contact input functions
MAN when DI1=OFF MAN when DI1=OFF RUN when DI1=OFF 1.SP2.SP3.SP 4.SP +5V Alarm output Model: X010-100-2 (resistor with M3.5 crimp-on terminal lugs)
Alarm-2 output AL2 5 DI2
Relay

When DIS=0 When DIS=1 (Factory-shipped setting) When DIS=2 When DIS=3 When DIS=4 Contact +5V Transistor contact
No function
STOP when DI2=ON 2.SP when DI2=ON 2.SP when DI2=ON DI1 OFF ON OFF ON
DI2 18 18 UT UT
RUN when DI2=OFF 1.SP when DI2=OFF 1.SP when DI2=OFF DI2 OFF OFF ON ON +5V Alarm-1 output AL1 6 When switching target
AUTO when DI1=ON AUTO when DI1=ON STOP when DI1=ON DI1 * Wiring can only be carried out for controllers with 24 V DC
Alarm-3 output AL3 4 STOP when DI3=ON AUTO when DI3=ON STOP when DI3=ON
DI3 No function SP 1 to 4: DI1 19
+5V 19
When switching target SP 1 to 8:
DI3 40 40 MAN when DI1=OFF MAN when DI1=OFF RUN when DI1=OFF 1.SP 2.SP3.SP 4.SP loop power supply.
No function +5V
RUN when DI3=OFF MAN when DI3=OFF RUN when DI3=OFF Alarm-2 output AL2 5 DI2
Relay

1.SP2.SP3.SP4.SP 5.SP6.SP7.SP 8.SP

COM 7 STOP when DI2=ON
DI4 2.SP when DI2=ON 2.SP when DI2=ON DI1 OFF ON OFF ON
Common AUTO when DI4=ON No function DI2 18 18 24 V DC Power Supply Wiring to Two-wire Sensor
No function DI3 ON OFF ON OFF ON OFF ON OFF
No function No function DI4 39 +5V 39 RUN when DI2=OFF 1.SP when DI2=OFF 1.SP when DI2=OFF DI2 OFF OFF ON ON
* Alarm-4 output is DI4 OFF ON ON OFF OFF ON ON OFF MAN when DI4=OFF
Alarm-3 output AL3 4 COM
Transistor

Alarm-4 output AL4 34 DI5 OFF OFF OFF ON ON ON ON OFF DI5 No function Common Common Common Common COM 20 20
optional function No function No function No function No function DI5 38 +5V 38
DI6 OFF OFF OFF OFF OFF OFF OFF ON
DI6 Common COM 7 +5V 12
Common COM 35 No function
* If all of the contact inputs are set to OFF, the controller
No function No function No function DI6 37 37 No function No function
STOP when DI3=ON AUTO when DI3=ON STOP when DI3=ON
DI3 29 DI3
uses the immediately preceding target setpoint. Relay contact rating: 240 V AC, 1 A RUN when DI3=OFF MAN when DI3=OFF RUN when DI3=OFF 29 External PV input
Relay contact rating: 240 V AC, 1 A COM +5V resistor 250
20 30 V DC, 1 A (resistance load) 1 to 5 V DC signal
30 V DC, 1 A (resistance load) No function Common Common Common Common COM 20 Remote when R/L=ON Remote when R/L=ON Remote when R/L=ON Remote when R/L=ON Remote when R/L=ON R/L (Note)
Transistor contact rating: 24 V DC, 50 mA
Local when R/L=OFF Local when R/L=OFF Local when R/L=OFF
R/L 28 28
Transistor contact rating: 24 V DC, 50 mA Local when R/L=OFF Local when R/L=OFF
+5V 13
Remote when R/L=ON Remote when R/L=ON Remote when R/L=ON Remote when R/L=ON Remote when R/L=ON COM 30 COM
Local when R/L=OFF Local when R/L=OFF Local when R/L=OFF Local when R/L=OFF Local when R/L=OFF R/L Common Common Common Common Common 30
* OT is a setup parameter. R/L 28 28
You can change the settings of the parameter OT to change the COM NOTE: External Contact Input Contact rating: 12 V DC, 10 mA or more
Common Common Common Common Common COM 30 30 If the power is turned on when the external contact input is OFF,
control output type. Two-wire transmitter
the mode (SPN, R/L, or A/M) existing before the power is turned off will be 43
See Initial Settings User’s Manual , for more information. Contact rating: 12 V DC, 10 mA or more continued. (except for RUN/STOP)
* OT is a setup parameter. Loop power
Correspondence between parameter OT and heating-side/cooling-side output types supply
You can change the settings of the parameter OT to change the control output type. 4-20mADC
21.6 to
OT=4 (factory-set default) OT=5 OT=6 OT=7 OT=8 OT=9 OT=10 OT=11 OT=12 See Initial Settings User’s Manual , for more information. 28.0 V DC
Heating side: Relay output Heating side: Voltage pulse output Heating side: Current output Heating side: Relay output Heating side: Voltage pulse output Heating side: Current output Heating side: Relay output Heating side: Voltage pulse output Heating side: Current output
Correspondence between parameter OT and control output types 44
(terminals 1 , 2 and 3 ) (terminals 16 and 17 ) (terminals 16 and 17 ) (terminals 1 , 2 and 3 ) (terminals 16 and 17 ) (terminals 16 and 17 ) (terminals 1 , 2 and 3 ) (terminals 16 and 17 ) (terminals 16 and 17 )
Cooling side: Relay output Cooling side: Relay output Cooling side: Relay output Cooling side: Voltage pulse output Cooling side: Voltage pulse output Cooling side: Voltage pulse output Cooling side: Current output Cooling side: Current output Cooling side: Current output OT=0 (factory-set default) OT=1 OT=2 OT=3
(terminals 48 , 49 and 50 ) (terminals 48 , 49 and 50 ) (terminals 48 , 49 and 50 ) (terminals 46 and 47 ) (terminals 46 and 47 ) (terminals 46 and 47 ) (terminals 46 and 47 ) (terminals 46 and 47 ) (terminals 46 and 47 )
Time proportional control Time proportional control Current output On-off control Note: Connecting a 250 resistor to the terminals is optional.
The control output types, “relay output” and “voltage pulse output” shown in the table above refer to those of time proportional control. Relay output (terminals 1 , 2 and 3 ) Voltage pulse output (terminals 16 and 17 ) (terminals 16 and 17 ) Relay output (terminals 1 , 2 and 3 ) Model: X010-250-2 (resistor with M3.5 crimp-on terminal lugs)
To change the type to a relay output for on-off control, select “Relay Terminals” and change the setpoint of the proportional band to “0.”

IM 05D01C12-01E (2)