Trane R Series Diagnostic Troubleshooting Repair page 49

Table 16 CPM (Chiller) Nominal Terminal Input and Output (1U1)
Terminal Description
Designation of Circuit
J1-4 to 3 to CLD IPC Communications
J1-2 to 1 to 1U5
J2-2, 1 Manufacturing Address Use Only
TB1-1, 2 Outdoor Air Temperature
TB1-3, 4 Emergency Stop
TB1-5, 6 NNS (Not Used)
TB2-1, 2 ECWT (Not Used)
TB2-3, 4 LCWT (Not Used)
J3-5, 4 Entering Evaporator Water Temper-
ature
J3-2, 1 Leaving Evaporator
Water Temperature
J4-3, 1 Under/Over Voltage
Transformer Input
J5-1 or 2 Input Power
to J5-4 or 5
J6-3, 1 Auxiliary Temp. Input
TB3-2, 1 Chilled Water
Flow Switch Input
TB3-3,4 Chilled Water Demand Switch and
External Auto Stop
TB4-1, 2 Chiller Alarm or Alarm Ckt 1
(N.O. Contact)
TB4-1, 3 Chiller Alarm or Alarm Ckt 1
(N.O. Contact)
TB4-4, 5 Unit Running, Alarm Ckt 2, or
Ckt 1 Running
(N.O. Contact)
TB4-6, 7 Maximum Capacity or Ckt 2 Running
(N.O. Contact)
TB4-8, 9 Chilled Water Pump Starter
(N.O. Contact)
TB4-10, 11 Spare Relay}
(N.O.) Contact
RLC-SVD03A-EN
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 ([PC)
+5 VDC No connection intended.
Refer to Temperature Sensor Checkout
open: 20.6 VDC unreg: Stopped
closed: 0 VDC: Normal
Must be jumpered if this feature is not used.
open: 20.6 Vdc unreg: Normal
closed: 0 VDC: Setback
N/A
N/A
Refer to Temperature Sensor Checkout
Refer to Temperature Sensor Checkout
Refer to Under/Over Voltage Transformer
Checkout Procedure
115 VAC, Power Supply on page
Refer to Temperature Sensor Checkout
open: 115VAC: No Flow
closed: < 5VAC: Flow (Software imposes a 6 second delay
to respond to opening or closing.
open: 115VAC: Stop
closed: < 5VAC: Auto
Dry SPDT Contact closes on Alarm, intended for 115 VAC
customer control circuit.
Dry SPDT Contact opens on Alarm, intended for 115 VAC
customer control circuit.
Dry SPDT Contact closes on Unit Running,
Alarm Ckt 2 or Ckt 1 Running, intended for
115 VAC customer control circuit.
Dry SPDT Contact closes on Maximum Capacity or Ckt 2
Running, intended for 115 VAC customer control circuit.
Dry SPST Contact closes when Chilled Water
Demand Switch is closed, opens after time
delay specified in UCM 115 VAC customer control circuit.
Dry SPST contact. 115 VAC customer control circuit.
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