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24 PDRP-2001 Series Manual — P/N 53043:E1 2/28/2011

Installation Input Circuits

2.3 Input Circuits

The PDRP-2001 has six programmable IDCs (Initiating Device Circuits). Each circuit is

compatible with System Sensor’s i

smoke detectors which generate a maintenance signal when the

detector becomes dirty and a separate supervisory ‘freeze’ signal when ambient temperature falls

below the detector rating of approximately 45

F. The maximum loop resistance limit for each IDC

is 100 ohms (700 ohms for linear heat detection). Do not use 2-wire smoke detectors on input

zones used for linear heat detection. The field wiring for each zone is supervised for opens, shorts

and ground faults. All conditions are visually and audibly annunciated.

Each circuit is configured for Style B (Class B) operation and will accept i

smoke detectors, any

normally-open contact devices as well as conventional 2-wire or 4-wire, 24 VDC smoke detectors.

Refer to the Device Compatibility Appendix for a list of compatible devices.

Initiating Device Circuits can be converted to Style D (Class A) by installing the optional Class A

Converter module. Refer to “CAC-5X Class A Converter Module” on page 29.

Figure 2.5 IDC Connections

Class B Initiating Device Circuits (supervised and power-limited) 4.7 K, ½ watt resistor P/N:71252

manual pull stations

heat detectors

Dummy load all unused

circuits - 4.7 K, ½ watt

resistor (P/N: 71245)

mrp-2001idc.cdr

UL listed Power Supervision Relay

(refer to Device Compatibility Appendix for list of compatible relays)

Resettable 24 VDC

4-wire smoke

detector power

(500 mA maximum)

UL listed compatible 4-wire smoke detector

manual

release

Input IDC

Waterflow Circuit

Normally Open

Waterflow Devices

or Pressure

Switches

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