Trane RTWA 70-125 TON - Manual (Page 49)

RLC-SVD03A-EN 49
Module Power and Miscellaneous I/O
Table 16 CPM (Chiller) Nominal Terminal Input and Output (1U1)
Terminal
Designation Description
of Circuit Normal Terminal Voltages
for Various Conditions
J1-4 to 3 to CLD
J1-2 to 1 to 1U5 IPC Communications 19.2 kbaud serial data, 5 volt signal level.
Refer to Interprocessor Communication ([PC)
J2-2, 1 Manufacturing Address Use Only +5 VDC No connection intended.
TB1-1, 2 Outdoor Air Temperature Refer to Temperature Sensor Checkout
TB1-3, 4 Emergency Stop open: 20.6 VDC unreg: Stopped
closed: 0 VDC: Normal
Must be jumpered if this feature is not used.
TB1-5, 6 NNS (Not Used) open: 20.6 Vdc unreg: Normal
closed: 0 VDC: Setback
TB2-1, 2 ECWT (Not Used) N/A
TB2-3, 4 LCWT (Not Used) N/A
J3-5, 4 Entering Evaporator Water Temper-
ature Refer to Temperature Sensor Checkout
J3-2, 1 Leaving Evaporator
Water Temperature Refer to Temperature Sensor Checkout
J4-3, 1 Under/Over Voltage
Transformer Input Refer to Under/Over Voltage Transformer
Checkout Procedure
J5-1 or 2
to J5-4 or 5 Input Power 115 VAC, Power Supply on page 41 .
J6-3, 1 Auxiliary Temp. Input Refer to Temperature Sensor Checkout
TB3-2, 1 Chilled Water
Flow Switch Input open: 115VAC: No Flow
closed: < 5VAC: Flow (Software imposes a 6 second delay
to respond to opening or closing.
TB3-3,4 Chilled Water Demand Switch and
External Auto Stop open: 115VAC: Stop
closed: < 5VAC: Auto
TB4-1, 2 Chiller Alarm or Alarm Ckt 1
(N.O. Contact) Dry SPDT Contact closes on Alarm, intended for 115 VAC
customer control circuit.
TB4-1, 3 Chiller Alarm or Alarm Ckt 1
(N.O. Contact) Dry SPDT Contact opens on Alarm, intended for 115 VAC
customer control circuit.
TB4-4, 5 Unit Running, Alarm Ckt 2, or
Ckt 1 Running
(N.O. Contact) Dry SPDT Contact closes on Unit Running,
Alarm Ckt 2 or Ckt 1 Running, intended for
115 VAC customer control circuit.
TB4-6, 7 Maximum Capacity or Ckt 2 Running
(N.O. Contact) Dry SPDT Contact closes on Maximum Capacity or Ckt 2
Running, intended for 115 VAC customer control circuit.
TB4-8, 9 Chilled Water Pump Starter
(N.O. Contact) Dry SPST Contact closes when Chilled Water
Demand Switch is closed, opens after time
delay specified in UCM 115 VAC customer control circuit.
TB4-10, 11 Spare Relay}
(N.O.) Contact Dry SPST contact. 115 VAC customer control circuit.