Battery Calculations; Initiating Circuits - Siemens Cerberus PYROTRONICS MXL Operation, Installation, And Maintenance Manual

XLD-1 Connections and Ratings
Electrical ratings:
XLD-1 Input
24V unfiltered,
full wave rectified
(Alarm and Supervisory),
215mA at 24 VDC (no devices)
1.1mA at 24 VDC (per device)

Initiating Circuits

28 VDC peak
(Alarm and Supervisory),
40mA max per circuit
(0-30 devices in alarm)
CLASS B WIRING
See Note 8
T-TAPPING ALLOWED
Technical Manuals Online! - http://www.tech-man.com

Battery Calculations

XLD-1 Module Current: 215mA
Device Current: 1.1mA per device
All wiring must be in accordance with
Article 760 of NEC and the local
building codes.
ANY LOOP MAY BE WIRED AS CLASS A OR CLASS B
NO END OF LINE DEVICE REQUIRED
ALL CIRCUITS SUPERVISED AND POWER LIMITED PER NEC 760
CLASS A WIRING
See Note 7
NO T-TAPPING ALLOWED
XLD-1 Wiring
firealarmresources.com
NOTES
1. Power limited to
NFPA 70 per NEC 760.
2. Minimum wire size:
18 AWG.
3. Maximum resistance:
100 ohms total.
4. Maximum
capacitance:
0.4µF between
+ loop and – loop.
0.8µF between
+ loop and chassis.
0.8µF between
– loop and chassis.
5. Each detector or
group of detectors,
requires a two-wire
CLASS B WIRING
circuit of thermo-
See Note 8
T-TAPPING ALLOWED
plastic fixture wire
enclosed in conduit
or limited energy
shielded cable
without conduit, if
permitted by local
building codes.
6. No end of line device
required.
7. Operates in full
conformance with
Style 6.
8. Operates in full
conformance with
Style 4.
9. Any loop may be
wired Class A or B.
10. 30 devices maximum
per loop.
11. T-tapping is NOT
allowed on Class A
loops.
12. All circuits are
supervised.
4 - 113