RWD68U Universal Controller
Technical Instructions
Document Number 155-738
January 14, 2005
Function Summary
•
Controller
Stand-alone controller with one direct or reverse acting 0 to 10 Vdc output and
one two-position (ON/OFF) output with dependent and independent adjustment
on each sequence for direct acting or reverse acting. Adjustable parameters,
including proportional band and integral action time.
•
Auxiliary selectable function
•
Universal input X2 for one of the following auxiliary functions:
−
P+I limiter function (Absolute and Relative)
−
Remote setpoint
−
Cascade control
−
Setpoint compensation
−
Winter/summer operation
−
Maximum priority
•
Digital input D1 for setpoint changeover day/night
Equipment
Combinations
The following Siemens devices can be connected to RWD68U Universal Controllers.
Other combinations with units from third-party manufacturers are possible, if the
input and output specifications match the RWD68U.
Table
1.
Description Document
Number
Sensor with Siemens Ni 1000 temperature sensing element
QAA25U Room temperature sensor with setpoint adjuster
155-330
Differential Pressure Sensor
155-719
GIB Series 310 lb-in Non Spring Return Actuators
GBB Series 177 lb-in Non Spring Return Actuators
155-176P25
155-177P25
GEB Series 132 in-lb Non Spring Return Actuators
155-318P25
GCA Series 142 in-lb Spring Return Actuators
155-173P25
155-174P25
155-175P25
GMA Series 62 in-lb Spring Return Actuators
155-315P25
SKD Valve Actuator with proportional input
SKD Valve Actuator with floating input
155-180P25
155-181P25
SKB/SKC Valve Actuator with proportional input
SKB/SKC Valve Actuator with floating input
155-163P25
155-171P25
SQX Valve Actuator with proportional input
SQX Valve Actuator with floating input
155-182P25
155-186P25
SQS Actuator with proportional input
SQS Actuator with floating input
155-190P25
155-191P25
SSC Actuator with proportional input
SSC Actuator with floating input
155-313P25
155-314P25
SSB Actuator with proportional input
SSB Actuator with floating input
155-192P25
155-195P25
SFA/SFP two-position valve actuators
155-321P25
Electric Rack and Pinion two-position actuator
155-541P25
1/2 to 2-inch two-way globe valves
155-184P25
1/2 to 2-inch three-way globe valves
155-185P25
2-12 to 6-inch two-way flange valves
155-159P25
2-1/2 to 6-inch three-way flange valves
155-160P25
MT Series 1/2 to 1-1/2-inch two-way globe valves
155-196P25
MT Series 1/2 to 1-1/2-inch three-way globe valves
155-197P25
MZ Series 1/2 to 1-inch two-way globe valves
155-198P25
MZ Series 1/2 to 1-inch three-way globe valves
155-199P25
1/2 to 1-inch zone valves
155-320P25
Siemens Building Technologies, Inc.
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