MKS T3PIA, Instruction Manual, Page: 28 / 70

Chapter Two: Installation Electrical Information
20
Auxiliary Connector
The 25-pin female Type “D” Auxiliary connector provides access to the alarm relay outputs for use with an
analog transducer.
Table 11: Auxiliary Connector Pin Out
Pin Number Description
1 Reserved
2 Reserved
3 Valve Open Command (DIN)
4 Valve Close Command (DIN)
5 Pressure/Position Mode Command (DIN)
6 PID/ST Mode Command (DIN)
7 LEARN Valve (DIN)
8 LEARN Conductance (DIN)
9 Analog Setpoint Input (+)
10 Analog Setpoint Input (-)
11 Pressure Output (AOut)
12 Position Output (AOut)
13 Analog Ground
14 Relay A – N.O.
15 Relay A – N.C.
16 Relay A – Common
17 Relay B – N.O.
18 Relay B – N.C.
19 Relay B – Common
20 Valve Open Status (D Out)
21 Valve Closed Status (D Out)
22 Interlock (TTL input)
23 Remote Zero Command (TTL input)
24 Digital Ground
25 Chassis Ground