LDB-3-2-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 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. LDB-3-2-A 2511 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.
- Note this unit is designed for 24VAC operation only . Applying power/operation
- Apply power to the timer. The red LED ➊ will illuminate.
- The external load will energise and green LED ➋ illuminate confirming the output is active.
- When power is removed, the load will de-energise. B oth LEDs will extinguish. The time delay period “t” will now commence.
- Even if power is re-applied, the time delay period must have finished before the load will energise again. Troubleshooting
- Check all connections are good to the timer and ext ernal devices.
- If the external 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 Brownout threshold: <19VAC Return voltage: >20VAC Power consumption: 1.5W Time delay (t): 3 minutes (fixed) Time delay tolerance: ± 10% Repeat accuracy: ± 5% at constant conditions Reset time: 60ms Power on indication: Red LED Output status/timing: Green LED Ambient temp: -20 to +60 °C Relative humidity: +95% Output: Solid state Load current rating: Min. Max. 40mA 1A Load type: Inductive or Resistive Housing: Grey flame retardant UL94 Weight: ≈ 46g 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: Max. 2.5mm 2 solid or stranded Terminal screw: M2.5, Combi-screw Tightening torque: 0.4Nm Max. Approvals: Conforms to: IEC 60664-1, IEC 60947-1, UL508 CE, UKCA and RoHS Compliant. 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 Fixed time delay of 3 minutes Red LED indication for supply status Green LED indication for output/timing status Solid state control with 1A max. switching capacity Designed for 24VAC low voltage control Easy to install Compact dimensions DIN Rail or Surface mounting CONNECTION DIAGRAM Type: L DB -3 Delay On Break Timer FRONT PANEL LAYOUT 1. Power supply status LED (Red) 2. Output/timing status LED (Green) LED STATUS TABLE STATUS RED ➊ GREEN ➋ ON DEVICE ON OUTPUT ON FLASHING SUPPLY BELOW THRESHOLD 1 TIMING OFF DEVICE OFF OUTPUT OFF