C4 User Manual
October 25, 2021 ©2021 Smartrise Engineering, Inc. All Rights Reserved Page 17
M120 Terminal – Internal fused source for all Machine Room safeties.
See the C4 Controller sheet 02 Machine Room I/O for wiring information.
Figure 19: Safety String Input Connector
2.1.10 120 VAC Inputs and Outputs (Field)
WARNING
ALL CONNECTIONS ON THIS TERMINAL BLOCK ARE HIGH VOLTAGE. DISCONNECT POWER TO
THE CONTROLLER BEFORE WIRING THESE TERMINALS.
The following are input terminals. See the C4 Controller sheet 02 Machine Room I/O for wiring
information.
ATU Terminal – Access Top Up controller termination.
ATD Terminal – Access Top Down controller termination.
ABU Terminal - Access Bottom Up controller termination.
ABD Terminal – Access Bottom Down controller termination.
GOV Input – Termination for the Governor switch. The primary side of the governor electrical
switch is connected to M120 and the secondary side is wired back to this terminal.
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