Appendix
I
E-1
External Interfaces
Analog Remote Setpoint / Process Temp Retransmit
Connecting to the Thermolator
WARNING: Improper installation, operation, or servic-
ing may result in equipment damage or personal
injury.
External analog signals must be fully isolated from ground. Be sure to use fully
isolated analog channels and/or power supplies. Analog wires must not be
common or referenced to earth ground! Failure to heed this requirement will
permanently damage the analog circuits in the TCU.
Setting the Jumpers
See the table below for the proper jumper position. These jumpers are also shown on
sheet 4 of the electrical print.
Wiring the circuit
Sheet 4 on the electrical print illustrates the proper way to wire the remote interface. You
can choose either 4-20mA or 0-10VDC, not both simultaneously.
Circuit Impedance Requirements
0-10VDC
4-20mA
Remote Temperature Setpoint
(Input)
11k
Ω
internal controller impedance.
50
Ω
internal controller impedance.
NOTE: Voltage or loop current source must be supplied by the external interface.
Process Temperature Retransmit
(Output)
1k
Ω
minimum external impedance.
500
Ω
maximum external impedance.
NOTE: Voltage or loop current is self-generated by the TCU’s temperature controller.
Terminal Wiring / Jumpers
0-10VDC
4-20mA
Remote Temperature
Setpoint (Input)
+
Terminal 255
-
Terminal 254
+
Terminal 255
-
Terminal 254
Analog Input
Jumper Number
Placement
(4-20mA)
Placement
(0-10V)
Input #4
J1-9 & J1-10
JMP10
OUT
OUT
JMP11
OUT
IN
JMP13
IN
IN
JMP22
IN
OUT
Process Temperature
Retransmit
(Output)
+
Terminal #5
on 10-pin
analog output
daughter card
-
Terminal #6
on 10-pin
analog output
daughter card
+
Terminal #3
on 10-pin
analog output
daughter card
-
Terminal #4
on 10-pin
analog output
daughter card
Jumper
Number
Placement (4-
20mA)
Placement (0-10V)
JMP1
Pins 2 & 3
Pins 1 & 2
For 0-10VDC operation, pins 3&4 must be connected
together with an external jumper.
See electrical print sheet 5 for terminal block locations.
(continued)
Summary of Contents for Thermolator TW-P
Page 6: ...iv I Table of Contents ...
Page 12: ...1 6 I Introduction ...
Page 36: ...3 14 I ...
Page 58: ...4 22 I Operation ...
Page 72: ...5 14 I Maintenance ...
Page 128: ...E 4 I Appendix ...
Page 134: ...G 4 I Appendix ...
Page 136: ...H 2 I Appendix ...