Trane R Series Diagnostic Troubleshooting Repair page 56

Table 19 CSR Normal Terminal Voltages for Options Module 1U2
Terminal Description
Designation of Circuit
J1-4 to 3 IPC Communications
or J1-2 to 1
J2-2, 1 Manufacturing
Address Use Only
TB1-3 +5V Source for use with
Resistor programming of CW
setpoint
TB1-3, 5 Ext. Chilled Water Setpoint
(Resistive option)
TB1-4, 5 Ext. Chilled Water Setpoint
(Current or Voltage option)
TB1-6 +5V Source for use with
Resistor programming of CL
setpoint
TB1-6, 8 Ext. Current Limit Setpoint
(Resistive option)
TB1-7 , 8 Ext. Current Limit Setpoint
(Current or Voltage option)
TB1-9, 10 Unused
TB2A-1,2 Serial Comm.Input
or TB2B-3,4
J6-1 or 2 Input Power
to J6-4 or 5
Dip Switch External Chilled Water Setpoint
SW1-1 Dip Switch
Dip Switch External Current
SW1-2 Limit Setpoint
Dip Switch
56
Module Power and Miscellaneous I/O
Normal Terminal Voltages
for Various Conditions
19.2 kbaud serial data, 5 volt signal level.
Refer to Interprocessor Communication Link (IPC).
+5 VDC No connection intended.
+5VDC open circuit with respect to chassis ground.
Refer to External Setpoint Inputs (4-20ma/2-10VDC) on page
Refer to External Setpoint Inputs (4-20ma/2-10VDC) on page
+5VDC open circuit.
Refer to External Setpoint Inputs (4-20ma/2-10VDC) on page
Refer to External Setpoint Inputs (4-20ma/2-10VDC) on page
Refer to Section 2, ICS Communications.
115 VAC, Refer to
Off for 2-10 VDC input.
On for 4-20 mA input.
Off for 2-10 VDC input.
On for 4-20 mA input.
Power Supply on page 41.
50.
50.
50.
50.
RLC-SVD03A-EN