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  Regent Controls Inc.
   1 Riverside Drive
   Ansonia, CT 06401
   email:info@regentcontrols.com
   Tel: 800-243-3141, 203-732-6200
   Fax: 203-732-6300

Untitled Document

REGENT’S

SR552A9D™
SR552D9D™

 SENSING RELAYS

Features:

  • Object or ground sensing with safe (low voltage, low current) sensing circuit.
  • Input can be contact, probe or solid-state sensing device.
  • Two output poles, independently convertible from normally-open to normally-closed.
  • Compact size. DIN rail or panel mount.
  • LED status indicator for each output pole.
  • Regent’s 5 Year “No-Questions-Asked” Warranty.

Ideal for:

  • Part presence or absence detection
  • Liquid level control
  • Web break detection
  • Position control
  • Feed limit switch
  • Wire break detection
  • Intrinsic safety barrier interface relay

UL Recognized File number E57361

The SR552A9D and SR552D9D sense the closing of external contacts or sensors. They are ideal for monitoring part presence or machine elements in high-speed production and packaging equipment.

An internal power supply provides low voltage sensing to any contact, positioning electrode, limit switch, magnetic reed switch, float switch, proximity sensor, etc. The low-energy sensing circuit increases the life of reed switches and other contacts by eliminating inrush current at turn-on and arcing at turn-off.

Because they respond to a drop in resistance, these relays will respond to the closing of “dirty” contacts: a contact resistance below 25K ohms will energize the relay.

When the SR552A9D or SR552D9D senses a closed contact, its two solid-state output switches energize. Field-proven DC output poles can control industrial loads such as solenoid valves and contactors, or serve as logic inputs to programmable controllers.

DIMENSIONS

WIRING DIAGRAM

NOTES
1. Either output pole can be used to provide a latching function.
2. On the SR552A9D, terminals L2 and –2 are electrically isolated; either or both may be grounded.
On the SR552D9D, terminals – and –2 are common and may be grounded.
3. For loads greater than 1 amp, do not parallel solid-state switches. The current will not divide equally and may result in damage.
4. On removal of L1,L2 or +,- voltage, both A,B and C,D open.
5. Reversing DC polarity will not damage these relays, but will prevent proper operation.

SPECIFICATIONS

SR552A9D

SR552D9D

Line Input (L1,L2 or +,-)

120 VAC +/- 20%, 50/60 Hz

12-30 VDC with 5% ripple max

Sensing Input (1,2)

Open-circuit voltage (typical)

Closed-circuit current

Resistance Sensitivity (typical)

 

12 VDC

less than 1 mA

Pull in < 25K ohms; Drop out > 50K ohms

 

8.5 VDC

less than 1 mA

Pull in < 25K ohms; Drop out > 50K ohms

Load Switch (A,B and C,D)


Rating

Off-state leakage

On-state voltage drop

Minimum load current

Response Times

Recommended load fuse

 

3-32 VDC, 1A max, inductive or resistive

less than 100 mA

1 VDC max

< 1 mA

turn-on: <1 msec turn-off: <1 msec

Buss PCB1

 

3-32 VDC, 1A max, inductive or resistive

less than 100 mA

1 VDC max

< 1 mA

turn-on: <1 msec turn-off: <1 msec

Buss PCB1

Temperature

0 to 65C (32 to 149F)

0 to 65C (32 to 149F)

    Product Name+   Price   Buy Now 
 SR552A9D   $255.00 
  Buy Now  
 
 SR552D9D   $255.00 
  Buy Now  
 
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