MKS 1249A - Appendix A: Product Specifications; Performance Specifications

Appendix A: Product Specifications Performance S
p
ecifications
37
Appendix A: Product Specifications
Performance Specifications
Bias Adjust Potentiometer Adjustable to fully Close valve with 4 mA or
1 VDC input
Adjustable to fully Open valve with a 0 VDC input
Control Lines
TTL Logic Level
Open Collector
OPEN and CLOSE - jumper selectable TTL logic level
or Open Collector
User must supply a 5 VDC ±5% @ 10 mA source
OPEN and CLOSE inputs are pulled to supply with
10K ohms
OPEN and CLOSE inputs can be activated by a TTL
low
≤
0.8 VDC, sinking a minimum of 1.6 mA
OPEN and CLOSE inputs are pulled to supply with
10K ohms
OPEN and CLOSE inputs can be activated by an open
collector or switch low
≤
0.8 VDC, sinking a minimum
of 4 mA
Note:
The leakage current on the output must not
exceed 200
µ
A when in the high state.
Set Point Input
0 to 5 VDC
0 to 10 VDC
4 to 20 mA
Jumper selectable:
200K ohm input impedance
200K ohm input impedance
250 ohm input impedance
Valve Drive
148 or 248 valves 0 to 120 mA