DS7400Xi ( 4+) Reference Guide
Copyright © 2007 Bosch Security Systems, Inc.
P/N: F01U035325-01 Page 5
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% S 0.375 Ah Alarm)
• The following table is the derated battery divided by hours minus the control standby (175 mA):
1.15
Max. Load Currents
* = Add 15 mA for each additional zone in alarm.
** = When calculating Standby and Alarm Current for the Octal Relay Module, use 10 mA plus 40 mA for each activated relay.
*** = Maximum current draw if using the DS7400Xi Panel power supply. Total of all outputs cannot exceed 750 mA.
Rechargeable
Battery Size
Max. Standby
for 4 hours
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
7 Ah
1.0 A
470 mA
X
X
X
X
X
8 Ah
1.2 A
580 mA
X
X
X
X
X
14 Ah
1.5 A
1.1 A
270 mA
X
X
X
X
15 Ah
1.5 A
1.2 A
300 mA
X
X
X
X
17.2 Ah
1.5 A
1.5 A
380 mA
100 mA
X
X
X
21 Ah
1.5 A
1.5 A
500 mA
160 mA
100 mA
X
X
28 Ah
1.5 A
1.5 A
740 mA
280 mA
190 mA
130 mA
100 mA
30 Ah
1.5 A
1.5 A
800 mA
310 mA
210 mA
150 mA
120 mA
35 Ah
1.5 A
1.5 A
970 mA
400 mA
280 mA
200 mA
170 mA
Device
Quantity
Standby Current
per Device
Total Standby
Current
(Quantity x Standby
Current per Device)
Alarm Current
per Device
Total Alarm
Current
(Quantity x Alarm
Current per Device)
DS7400Xi (4+) Control Panel
1
175 mA
175 mA
250 mA
250 mA
DS7416i Advanced Radio Communications Module
127 mA
127 mA
DS7412 - RS232 Serial Interface Module
35 mA max.
35 mA max.
DS7420i -Dual Phone Line/Bell Supervision Module
20 mA
140 mA
DS7430 – Multiplex Expansion Module
65 mA
65 mA
DS7432 – 8-Input Remote Module
10 mA
10 mA
DS7433 – 8-Input Direct Module
65 mA
80 mA*
DS7436 – Dual Multiplex Expansion Module
130 mA
130 mA
DS7445/DS7445i Keypad
75 mA
75 mA
DS7447/ DS7447E Keypad
100 mA
100 mA
DS7448 Keypad
80 mA
100 mA
DS7450, DS7452, DS7455 Contact Points
350
μ
A
350
μ
A
DS7457 – Single Zone Multiplex Input Module
350
μ
A
350
μ
A
DS7460 – Dual Zone Module
1 mA
1 mA
DS7465 – Input/Output Module
1 mA
1 mA
DS7480 – Bell Supervision Module
7 mA
50 mA
DS7481 – Single Phone Line Monitor
20 mA
20 mA
DS7488 – Octal Relay Module**
10 mA + 40 mA**
10 mA + 40 mA**
DS7489 – Solid State Output Module
10 mA
750 mA max.***
MX280 Series Multiplex Smoke Detectors
500
μ
A
560
μ
A
MX540 (DS7473) PIR Detector
800
μ
A
800
μ
A
MX835 TriTech
®
PIR/Microwave Detector
6 mA
35 mA
MX775 (DS7470) PIR Detector
200
μ
A
200
μ
A
MX794 (DS7474) PIR Detector
800
μ
A
800
μ
A
MX934 (DS7471) PIR Detector
200
μ
A
200
μ
A
MX938 (DS7472) PIR Detector
200
μ
A
200
μ
A
MX950 (DS7476) TriTech
®
PIR/Microwave Detector
6 mA
35 mA
RF3222 Wireless Receivers
30 mA
30 mA
2-Wire Smoke Detectors
4-Wire Smoke Detectors
Bells, Horns, etc.
Other
Sensors
Other
Grand
Total
Grand
Total
Max. Load Currents
Standby
Alarm
UL Installations
1.5 A
2.5 A
Maximum Current By Output:
Not to exceed the maximum load currents listed above in Standby or Alarm
Aux. Power & Keypad (Combined)
1.0 A
1.0 A
Option Power
1.0 A
1.0 A
Bell Output
X
1.75 A
Programmable Output 2
500 mA
500 mA
Loop Power +
500 mA
500 mA
