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UCS-121 Series



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UCS-121 Series

Sequencer Control Module - Single Stage UCS-121 Series

Sequencer Control Module - Single Stage

 

The UCS-121 sequencer control module - two stage from Kele is a solid-state device used for multistage control in HVAC systems, sequencing boilers or chillers. The module also sequences floating/tri-state control of VAV boxes from a single analog signal for building automation systems, BAS. The UCS-121 can be used to obtain a digital output from a voltage or current producing sensor. Units may be daisy chained to provide additional stages of control, and a mounting track is supplied for easy installation.


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QtyModelDescriptionIn StockList PriceInternet Price
UCS-121 SEQUENCER MODULE - 1 STAGEIn Stock127.0067.31
UCS-121-C SEQUENCER - 1 STAGE CALIBRATEDIn Stock159.0084.27
UCS-121-H 1 STAGE SEQUENCER-ENCLOSEDIn Stock144.0076.32
UCS-121-H-C 1 STAGE SEQ-ENCLOSED/CALIBRATDIn Stock204.00108.12
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Accessories

No accessories found
Features
  • One stage of relay control, SPDT
  • Voltage or current input
  • LED indication of relay status
  • Adjustable relay setpoint
  • Adjustable relay differential
  • Snap-track or hub enclosure
  • Jumper-enabled time constant
Specifications

Supply Voltage:24 VAC ±10%, half-wave; or 24 VDC ±10%

Supply Current:50 mA @ 24 VAC; 25 mA maximum @ 24 VDC

Accuracy:±1%

Input:0.5-20 mA or 0.75-15 VDC, jumper selectable

Input Impedance:250Ω (mA input); 10 kΩ (VDC input)

Output:One SPDT relay, factory set at 12 mA, 9 VDC; adjustable via setpoint potentiometer

Relay Differential:Factory set at 0.5 mA or 0.375V, adjustable 0.2-2V or 0.25-3 mA

Relay Output :5A @ 120 VAC

Wiring Terminations:Screw terminals

Time Constant:30 seconds, jumper enabled

Operating Temperature:32° to 158℉ (0° to 70℃)

Operating Humidity:5% to 95% RH (non-condensing)

Dimensions:

 :UCS-121 3.3"H x 1.5"W x 1.3"D (8.2 x 3.8 x 3.2 cm)

 :UCS-121-H 4.0"H x 2.3"W x 1.8"D (10.2 x 5.7 x 4.4 cm)

Weight:0.2 lb (0.09 kg) without enclosure; 0.3 lb (0.14 kg) with enclosure

Approvals:RoHS

Warranty:1 year

Certifications


Download Additional Data

document   UCS-121 Series Catalog Page
 

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