Specifications
DS7400Xi Ver. 3+ Reference Guide Copyright © 2004 Detection Systems, Inc. P/N: 28995K Page 5
1.15 Max. Load Currents
Max. Current By Output
:
Not to exceed the max. load
currents listed above per column.
Option Power
Standby Alarm
U. L. Installations
Non-U. L. Applications
Aux. Power & Keypad (Combined)
Bell Output
Programmable Output 2
Loop Power +
1.5 A
2.0 A
1.0 A
1.0 A
X
500 mA
500 mA
2.5 A
2.5 A
1.0 A
1.0 A
1.75 A
500 mA
500 mA
Max. Load Currents
1.16 Backup Battery Calculation
• The following table is used to calculate the standby battery capacity required by NFPA when using the DS7400Xi:
1.17 Standby Current Load
• Battery AH - (20% Storage + 0.375 AH’s Alarm)
• The following table is the derated battery divided by hours minus the control standby (175 mA):
15 AH
7 AH
8 AH
14 AH
17.2 AH
21 AH
28 AH
30 AH
35 AH
Rechargeable
Battery Size
Max. Standby
for 8 hours
Max. Standby
for 24 hours
Max. Standby
for 48 hours
Max. Standby
for 60 hours
Max. Standby
for 72 hours
Max. Standby
for 80 hours
Max. Standby
for 4 hours
1.0 A
1.2 A
1.5 A
1.5 A
1.5 A
1.5 A
1.5 A
1.5 A
1.5 A
X
X
X
X
X
X
100 mA
120 mA
170 mA
470 mA
580 mA
1.1 A
1.2 A
1.5 A
1.5 A
1.5 A
1.5 A
1.5 A
X
X
X
X
X
X
130 mA
150 mA
200 mA
X
X
X
X
X
100 mA
190 mA
210 mA
280 mA
X
X
X
X
100 mA
160 mA
280 mA
310 mA
400 mA
X
X
270 mA
300 mA
380 mA
500 mA
740 mA
800 mA
970 mA
Device
Quantity
Standby Current
Per Device
Total Standby Current
(Quantity x Standby
Current Per Device)
65 mA
10 mA
65 mA
127 mA
20 mA
Alarm Current
Per Device
65 mA
10 mA
80 mA*
127 mA
140mA
Total Alarm Current
(Quantity x Alarm
Current Per Device)
175 mA
1 175 mA 250 mA 250 mA
10 mA + 40 mA**
10 mA + 40 mA**
7 mA
1 mA
1 mA
350 µA
350 µA
50 mA
1 mA
1 mA
350 µA
350 µA
20 mA
20 mA
75 mA
100 mA
75 mA
100 mA
10 mA 750 mA max***
500 µA 560 µA
800 µA
800 µA
6 mA
35 mA
200 µA
200 µA
800 µA 800 µA
200 µA
200 µA
200 µA 200 µA
6 mA
35 mA
** = When calculating Standby and Alarm Current for the Octal-Relay Module, use 10 mA plus 40 mA for each activated relay.
Grand Total
Grand Total
*** = Maximum current draw if using DS7400Xi panel power supply. Total of all outputs cannot exceed 750 mA.
DS7433 - 8 Input Direct
ARDIS Communications Module
DS7430 - Multiplex Expansion
DS7432 - 8 Input Remote
DS7420i - Dual Line/Bell Supervision
Control Panel
DS7450 & DS7452 - Contact Points
DS7460 - Dual Zone
DS7465 - Input/Output
DS7480 - Bell Supervision
DS7481 - Single Line Monitor
MX540 (DS7473) PIR Detector
MX835 TriTech Microwave/PIR Detector
MX775 (DS7470)PIR Detector
DS7457 - Single Zone Multiplex Input
MX794 (DS7474) PIR Detector
DS7445/DS7445i Keypad
DS7447/DS7447E Keypad
MX950 (DS7476)TriTech Microwave/PIR
2-Wire Smoke Detectors
Bells, Horns, etc.
Other sensors
Other
MX934 (DS7471) PIR Detector
MX938 (DS7472) Ceiling Mount PIR
DS7488 - Octal Relay*
DS7489 - Solid State Output Module
MX280 Series Multiplex Smoke Detectors
4-Wire Smoke Detectors
* = Add 15 mA for each additional zone in alarm.