MR-2602 Installation & Operator’s Manual
11
Figure 9: Connecting 2-Wire Alarm Initiating Devices
Typical
1. Maximum 30 smoke detectors per zone (100 µA each standby).
2. Manual station, heat detector.
3. Maximum total loop wire resistance = 100 ohms.
4. Program zone as:
Type 1 - Smoke and contact devices instant alarm (default)
Type 2 - Smoke auto-verify and contact as instant.
ALM NC
Common Alarm relay, Normally Closed contact
The Common Alarm relay is normally de-energized.
Contact is shown in the de-energized state.
Contacts are rated 30 V
DC
, 2 Amps max.
Z1+
Zone 1 positive input
Z1-
Zone 1 negative input
Zone output is 24 V
DC
nominal to power 2-wire smoke detectors. Maximum current
draw is 60 mA in alarm and is limited by the zone circuitry. Zones may be configured to
monitor both 2-wire smoke detectors and initiating devices that employ dry contacts.
(manual stations & heat detectors)
Z2+
Same as zone 1 positive
Z2
-
Same as zone 1 negative
Note:
For each supervised installation wire, a separate terminal must be used.
* See “9.0 Appendix: Table of Compatible Smoke Detectors” on page 33 in this manual for a list of
compatible 2-wire smoke detectors
Terminal
Label
Description
