The Edwards 4-PPS/M-E is the European version of the 4-PPS/M system power supply and local rail module for Edwards EST3 and EST4 life safety platforms. It consists of a high-efficiency switch-mode power supply card and a power supply monitor module; the monitor module mounts to the local rail and shares its power with the other rail modules and user interface cards in the panel.
The 4-PPS/M can be configured as a primary power supply (PPS), booster power supply (BPS) or booster charger (BBC). Specifications below are from Edwards’ 4-PPS/M series datasheet.
Key features
- High-efficiency switch-mode design with 7A of filtered and regulated power
- Two 3.5A auxiliary 24V DC outputs on easily accessible terminal blocks
- Supplies can be paralleled: up to four in one enclosure give up to 28A for rail modules, displays and eight auxiliary outputs
- Temperature-compensated, dual-rated battery charger (software set for 10-24Ah or 30-65Ah batteries)
- Automatic battery load testing, electronic power limiting and short-circuit protected battery leads
- Specific diagnostic trouble codes and text messages shown on the panel LCD to speed fault finding
- Not to be installed in the same cabinet as legacy 3-PPS/M, 3-BPS/M or 3-BBC/M supplies
Technical specifications
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Part number: 4-PPS/M-E
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Output: 7A filtered and regulated, 24V DC nominal
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Auxiliary outputs: 2 x 3.5A
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Input voltage (4-PPS/M series): 120-240V AC (+10%, -15%), 50-60Hz
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Input current: 3.0A
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Brownout level: 96V AC or less
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Booster current (BPS/BBC): 45mA alarm, 45mA standby
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Battery charging capacity: 65Ah sealed lead-acid
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Low battery trouble: 22.5V DC
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Deep discharge cut-off: 19.5V DC
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Mounting: 1 local rail module space, 1 chassis footprint
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Wire size (TB1 and TB3): 0.75 to 4.0mm² (20 to 12 AWG)
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Ground fault detection: <10kΩ
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Shipping weight: 2.3kg
