Orion System Dual Electronic Expansion Valve Module - Manual (Page 8)

Dual Electronic Expansion Valve Module
Technical Guide 8
Inputs and Outputs
Table 2: Dual Electronic Expansion Valve Module
Inputs & Outputs
I/O Map
The following inputs and outputs are available on the Dual Electronic
Expansion Valve Module. See Table 2 below to reference the Input/
Output Map.
Stand-Alone Input Commands
Valve A Enable On/Off
A 24 volt signal to Binary Input #1 initiates the Valve A Enable
function. Once Valve A is enabled, it tries to maintain the desired
Superheat Setpoint. Valve A maintains the Superheat Setpoint un-
til it loses the enable signal which then puts Valve A in Off mode.
Valve B Enable On/Off
A 24 volt signal to Binary Input #2 initiates the Valve B Enable
function. Once Valve B is enabled, it tries to maintain the desired
Superheat Setpoint. Valve B maintains the Superheat Setpoint un-
til it loses the enable signal which then puts Valve B in Off mode.
Binary Inputs
1 Valve A Enable
2 Valve B Enable
Binary Outputs
1 Valve A Alarm Relay
2 Valve B Alarm Relay
Analog Inputs
1 Coil A Temperature
2 Coil A Suction Pressure
3 Coil B Temperature
4 Coil B Suction Pressure
Stepper Motor Outputs
1 Expansion Valve A
2 Expansion Valve B