Product Manual B

3. Wiring 5-2019
20 0962-0617 (Issue 8)Copyright © 2019 Cummins Inc.
No. Description No. Description
1 Source 1 (normal) auxiliary switch 4 NC
2 Source 2 (emergency) auxiliary switch 5 COM
3 NO
FIGURE 11. TB1 CONNECTIONS
3.2.4 Remote Test Input
The transfer switch may be wired for a remote test input. The switch is used to start and stop manually
initiated system tests. As with the control panel Test pushbutton, the remote test input can be configured
to test with or without load.
A remote test input is set up by connecting a dry (voltage free) contact between TB2-5 and TB2-8. Closing
the contact starts a test and opening the contact cancels the test. The Test LED flashes to signify the start
of a test and stays on during the test.
Closing the contact causes the transfer switch to sense a (simulated) utility power failure and sends a
start/run signal to the genset. If the control is set up to test with load, the load is transferred to the genset
when the genset becomes available. The Utility Power Available LED remains on to show that the utility
did not fail.