MKS 651D Series, User Manual, Page: 23 / 162

Chapter Two: Installation Product Compatibility
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Product Compatibility
Valves
MKS downstream control valves compatible with the 651 unit include:
•
Types 253 and 653
Transducers
MKS transducers compatible with the low power 651 unit include:
•
Types 121, 122, 124, 127, 128
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, 220, 223, 622, 626, 627, and 628.
MKS transducers compatible with the high power 651 unit include:
•
Types 120, 121, 122, 124, 127, 128, 220, 223, 621, 622, 626, 627, and 628.
Table 2 lists the current available to a transducer from a 651 controller.
Transducer Current Available
Valve
Configuration
651
Supply Type
Line Voltage
Range
Transducer
Current
Available
253/653 Low power 90 to 99 VAC 50/60 Hz 400 mA
180 to 198 VAC 50/60 Hz 400 mA
100 to 132 VAC 50/60 Hz 500 mA
200 to 264 VAC 50/60 Hz 500 mA
253/653 High power 90 to 132 VAC 48/62 Hz 1.5 A
180 to 264 VAC 48/62 Hz 1.5 A
Table 2: Transducer Current Available
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To ensure proper operation of the Type 128 transducer in the (90 to 99 or 180 to 198) power line voltage
range, it is recommended that the high power 651 unit be used. Above 100/200 Volts, the low power unit
provides adequate power.