APPENDIX B: ELECTRICAL AND DATA CONNECTIONS
UNIFLOW
®
4 PULSED HEAT CONTROL
B-22 990-908
Auxiliary Thermocouple Input Connector (J15)
Thermocouple wires are to be connected to pins 4 and 5 on Connector J15. No connections are to be
made to pins 1, 2 and 3 on connector J15.
NOTE: Both the
Auxiliary and Main thermocouples must be of the same type: E, J, or K. Refer to the
instructions on the previous page (B-21) for connector
J9 to set the thermocouple type for both the
Auxiliary and Main thermocouples.
Polarity Type “E” Type “J” Type “K”
J15 - Pin 4 (+) Chromel (purple) Iron (white) Chromel (yellow)
J15- Pin 5 (-) Constantan (red) Constantan (red) Almel (red)
If the Auxiliary thermocouple is not wired correctly on Pins 4 and 5 of J15, or the thermocouple is
damaged, there will not be any error message on the Control and the temperature displayed will remain
at approximately ambient room temperature.
Temperature Analog Output Connector (J10)
Connector J10 provides analog output signals proportional to the temperatures of the Main and Auxiliary
thermocouples. The temperature of the Main thermocouple is present on J10 Pin 3. The temperature of
the
Auxiliary thermocouple is present on J10 Pin 2.
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