Type 1651

**I/O Connector**
1	PLO Relay #1 - NC contact
2	PLO Relay #1 - NO contact
3	PLO relay #2 - NC contact
4	Digital Ground
5	Learn system (Low)
6	Hold both pin 6 and 11 Low to select analog set point with position control
7	Softstart (Low)
8	Close valve (Low)
9	Reserved
10	Analog set point divided by 10
11	Hold only pin 11 low to select analog set point with pressure control Hold both pin 6 and 11 low to select analog set point with position control
12	Select set point E (Low)
13	Select set point D (Low)
14	Select set point C (Low)
15	Select set point B (Low)
16	Select set point A (Low)
17	Reserved
18	Reserved
19	Valve open status (Hi=open)
20	PLO relay 1 - common contact
21	PLO relay 2 - common contact
22	PLO relay 2 - NO contact
23	Valve closed status (Hi=closed)
24	Reserved
25	Remote zero (Low)
26	Stop valve (Low)
27	Open valve (Low)
28	PLO #2 status (Low=out of limit)
29	PLO #1 status (Low=out of limit)
30	+15 V Output
31	-15 V Output
32	Power Ground
33	+ Set Point Input
34	- Set Point Input
35	Analog Ground
36	Pressure Output Voltage
37	Position Output Voltage

**Valve Connector**
Please Consult Factory

Note:

This information is subject to change without notice.

Need help?

Contact MKS Instruments by sending an email to MKS or call 800-227-8766 or 978-284-4000 (outside the USA).