User manual

2. Installation Powering External Devices

PDRP-1002 Instruction Manual PN 51135:B0 04/06/01

Alarm Relay Circuit

One Form-C dry contact alarm relay is provided in the basic panel for controlling supplementary devices.

Contacts are rated 2 amps at 30 VDC and 0.5 amps at 30 VAC (resistive) and are non-silenceable when

an alarm occurs.

Trouble Relay Circuit

One Form-C dry contact trouble relay is provided in the basic panel for controlling supplementary devices.

It is rated 2 amps at 30 VDC and 0.5 amps at 30 VAC (resistive) and will restore to normal when the trouble

condition is cleared.

Note: Power connected to these relay contacts must come from a power-limited supply. Power may be obtained from

TB1 Terminals 24VU or 24VR and TB2 Terminals 24VNR, or a UL-listed power-limited power supply.

Figure 11 Schematic Representation of Alarm/Trouble Coils & Contacts

Powering External Devices

CAUTION: Several different sources of power can be connected to this panel. Disconnect all sources

of power before servicing. The panel and associated equipment may be damaged by removing and/or

inserting cards, modules, or interconnecting cables while this unit is energized.

DC power connections are available from TB1 and TB2 on the control panel as shown below:

Figure 12 Power Terminals

TB3

MS44-relay.cdr

TB1

TB2

RMS-Regulated Power -

24 VDC power for inductive-type

devices such as door holders can

be connected to these terminals.

This output is not suitable for

powering devices requiring

filtered DC power.

Resettable Power -

24 VDC filtered, resettable power for four-wire smoke

detectors can be obtained from these terminals.

The combined current draws from the Resettable and

Nonresettable outputs cannot exceed 200 mA.

Nonresettable Power -

24 VDC filtered, nonresettable power

can be drawn from these terminals.

The combined current draws from the

Resettable and Nonresettable outputs

cannot exceed 200 mA.

MS44-dcpower.cdr