LDOB-3-A BROYCE | Alldatasheet

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Technical content

Broyce Control Ltd., Pool Street, Wolverhampton, West Midlands WV2 4HN. England Tel: +44 (0) 1902 773746 Fax: +44 (0) 1902 420639 Email: sales@broycecontrol.com Web: www.broycecontrol.com The Information provided in this literature is believed to be accurate (subject to change without prior notice); however, use of such information shall be entirely at the user’s own risk. LDOB-3-A 2506 XXXXX HS Code: 85364900 Country of Origin: UK Dims: to DIN 43880 W. 17.5mm INSTALLATION

  • BEFORE INSTALLATION, ISOLATE ALL SUPPLIES
  • Connect the unit as per the diagram below.
  • The timer should be connected so that it is in seri es with the Thermostat and Contactor. Applying power/operation
  • Apply power to the application and providing the th ermostat is closed, the contactor will energise and load (compressor) will operate.
  • As soon as the thermostat opens, the contactor and load will de-energise. The time delay period “t” will now commence.
  • Even if the thermostat closes again, the time delay period must have finished before the contactor/load are energised again. Troubleshooting
  • Check all connections are good to the timer and ext ernal devices.
  • If the contactor/load fails to operate, ensure the voltage is within the operating limits as specified in the technical specification on the right.
  • Ensure that the time delay period has completed. TECHNICAL SPECIFICATION Voltage rating Un: 24VAC Frequency range: 48 – 63Hz Supply variation: 75 – 125% Un Time delay (t)*: 3 minutes (Model LDOB-3) 5 minutes (Model LDOB-5) Time delay tolerance: ± 20% Repeat accuracy: ± 5% at constant conditions Reset time: 60ms Ambient temp: -20 to +60 °C Relative humidity: +95% Output: Solid state Load current rating: Min. Max. 40mA 1.5A Load type: Inductive or Resistive Housing: Grey flame retardant UL94 Weight: <45g Mounting option: On to 35mm symmetric DIN rail to BS EN 60715 or direct surface mounting via 2 x M3.5 or 4BA screws using the black clips provided on the rear of the unit. Terminal conductor size ≤ 2 x 2.5mm 2 solid or stranded Approvals: Conforms to: IEC 60664-1, IEC 60947-1, UL508 CE, UKCA and RoHS Compliant. * Model to be specified when ordering FUNCTION DIAGRAM Terminal Protection to IP20 DIMENSIONS Withdraw clips fully when surface mounting 92 (+/- 1mm) 67.5 49.5 66.5 89 (exc. clips) Insert screwdriver to release clips all dimensions in mm. Installation work must be carried out by qualified personnel.  Protects compressor in refrigeration, air conditioning and heat pumps against premature cycling  Prevents re-starting of compressor until time delay “lockout” period has completed  Works with anticipator thermostats  Two fixed time delays to choose from - 3 or 5 minutes* (factory set)  Simple 2-wire connection  Solid state control with 1.5A max. switching capacity  Designed for 24VAC low voltage control  Easy to install  Compact dimensions  DIN Rail or Surface mounting CONNECTION DIAGRAM LDOB Timer Contactor Load 24VAC Thermostat 24VAC t o Line Voltage Control Transformer Type: L DOB Delay On Break Timer