LOOP POWERED TRIP ALARMS
SEM1401 and SEM1402

SEM1400 Loop Powered Trip Alarm
  • Loop Powered
  • Small Size
  • Mains Rated Relays
  • Single or Dual Trip
  • Fail Safe LED Indication
  • Active High or Low

 
INTRODUCTION
The SEM1401 and SEM1402 are loop powered trip alarms designed to accept a 4 to 20 ma signal from a transmitter and to provide a single trip output (SEM1401) or two individual trip outputs (SEM1402).   Utilizing the loop power means that no separate supply is required to power the trip alarms with the resulting cost reductions and simplified wiring.

Their small size and the mains line relay contacts make them the ideal choice for many trip alarm applications.


INPUT SPECIFICATION @ 68 °F

.Type .Two wire 4 to 20 ma, (50 ma max.)
.Protection .Reverse connection protected
.Loop Drop .5 V max.

OUTPUT

.Alarm .HIGH or LOW active
.Contact(s) .SEM1401 single relay with N.O. and N.C. contacts.
.SEM1402 two single pole relays with N.O. contacts sharing a common connection.
.Rating .Resistive load 2 A @ 250 VAC / 125 VDC
.Indication .Alarm LED(s) on module front face
.Setpoint .0-100% multi-turn trim potentiometer(s) access on module front face
.Repeatability .±0.2%
.Hysteresis .SEM1401 Adjustable 0.1-5% single turn trim pot on module front face.
.SEM1402 Fixed 0.5%
.Delay .0.5 second fixed delay
.Failsafe .On loss of signal:
.HIGH Alarm...No alarm condition
.LOW Alarm...Alarm condition (i.e. Alarm operates as if signal has fallen to -25%
.Isolation .3000 VAC rms between contacts and input
.1000 VAC rms between contacts
.Ambient Operation .32º to 158ºF
.10-95% RH non-condensing
.NEMA 1
.Connections .Captive clamp screws
.Cable Size .12 AWG solid / 14 AWG stranded
.Case Material .Polyamide (Grey)
.Case Flammability .To UL94-VO VDE 0304 Part 3 Level IIIA

APPROVALS

.EMC Testing .All versions are tested to:
.IEC 801-2 .Susceptibility to electrostatic discharge
.IEC 801-3 .Radiated Susceptibility
.IEC 801-4 .Susceptibility to conducted interference
.EN 55022 .Radiated emissions
.EMC .less than 0.5% error to EN 50082-1

SEM1401 Instruction Manual

SEM1402 Instruction Manual


ORDER CODE

SEM1401     Single relay N.O./N.C. contacts
SEM1402    Dual trip N.O. contacts


Call (713) 861-1100 for literature and pricing. If you prefer to ask for information via the internet, email info@sandelius.com.

 

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