Orion System VCM-X Modular E-BUS - Manual (Page 24)

Zone
Zone
INSTALLATION & WIRING
VCM-X Modular E-BUS Controller Technical Guide 24
Binary Inputs Wiring
Figure 21: OE356-01-BI – 4 Binary Input Expansion Module Wiring
Dirty Filter - N.O. Contact
Proof Of Flow - N.O. Contact
Remote Forced Occupied - N.O. Contact
Emergency Shutdown - N.C. Contact
BI3 BI4
COM
BI1
24 V
A
C
GND
BI2
Modular Cable
Connect To VCM-X E-BUS
Controller
Modular Cable
Connect To Next Expansion
Board (When Used) 24 VAC
GND
4 Binary Input
Expansion Module
5 VA Minimum Power
Required For
4 Binary Input
Expansion Module
WARNING!!
Observe Polarity! All boards must be wired with GND-to-GND and 24VAC-to-24VAC. Failure to observe polarity
will result in damage to one or more of the boards. Expansion Modules must be wired in such a way that the
expansion modules and the controller are always powered together. Loss of power to the expansion module will
cause the controller to become inoperative until power is restored to the expansion module.
BI1 BI2 BI3 BI4
COM
VCM BIN EXP
BOARD
YS102364 REV1
24V
AC
GND
PWR
4 Binary Inputs Located On 4 Binary
Input Expansion Module
If your HVAC unit only requires an Emergency Shutdown (Smoke Detec-
tor/Firestat or other shutdown conditions), Dirty Filter, Proof of Flow or
Remote Forced Occupied Inputs or all of these 4 inputs and you don’t
need any of the other inputs or outputs provided on the OE333-23-EM
VCM-X Expansion Module, you can use the OE356-01-BI 4 Binary
Input Expansion Module for these inputs.
The transformer used for powering the 4 Binary Input Expansion Module
must also be used to power the binary inputs. See Figure 21 below for
detailed wiring.
Warning: Do not apply any voltage greater than 24 VAC to the
binary inputs. Higher voltages will damage the expansion module
and possibly other components on the system.