Starter Module Values - Trane CVHE Troubleshooting Manual

Starter Module Values

The starter module (2U1) is present in all Trane-provided starter panels, whether unit-mounted or
remote. For CTVs, if no Trane starter is provided and the customer is providing the starter, 2U1 is
mounted in an extension of the unit control panel. It is still designated as 2U1.
2U1 controls the starter when starting, running and stopping compressor motor and provides an
interface to all types of starters and AFDs (adjustable frequency drives).
2U1 provides compressor motor protection for running overload, phase reversal, phase loss,
phase unbalance and momentary power loss.
Low Voltage (<30VAC) Inputs:
24 VAC; IPC link to chiller module; phase voltages (optional); phase currents; solid-state
heat sink temperature (optional); starter driver fault.
Low Voltage (<30VAC) Outputs:
Speed signal output (0-10 VDC - optional)
High Voltage (>30VAC) Inputs:
Transition complete CTV only)
High Voltage (>30VAC) Outputs:
Stop relay; starter relay; run relay; shorting relay; transition relay, shunt trip relay.
Figure 7
Starter Module (Wye-Delta)
IP Communications
Phase A - B Volts
Phase B - C Volts
Phase C - A Volts
Phase A Current
Phase B Current
Phase C Current
Heat Sink Temp
Starter Driver Fault
CVHE-SB-32A
J1
J3
J5
J7
24 VAC
J2
Transition Complete
J4
J6 Stop Relay
J8
Start Relay
J10 Run Relay
Shorting Relay
J12
Transition Relay
J14
Shunt Trip Relay
J16
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