Bosch DS7400XiV4-EXP Spécifications télécharger pdf (Page 9)

DS7400XiV4-EXP | Reference Guide | 2.0 Specifications EN | 9

Bosch Security Systems | 1/05| 4998154963B

Table 2: Specifications (continued)

Description Value

Fire Signal Initiating

Circuit

(2-wire mode)

Fire circuit works with 2- or 4-wire

detectors and has optional alarm

verification.

• Number of circuits: 8 on-board

• Type of circuit: Class B,

latching

• End-of-line resistor: 2.2 k Ω

(P/N 25899, provided)

• Supervisory current: 5.5 mA

• Maximum short circuit current:

22 mA

• Maximum line resistance: 60 Ω

• Circuit voltage range: 8.5 VDC

to 14.1 VDC

• Total detector standby current:

2.5 mA

Multiplex Bus Wiring

Requirements

• 0.8 mm (#22 AWG). Up to

610 m (2000 ft.) per system.

• 1.0 mm (#18 AWG). Up to

1525 m (5000 ft.) per system.

Multiplex Zone

Sensor Loop Wiring

Maximum wire length not to exceed

150 m (500 feet) regardless of the

wire gauge.

Option Bus Wiring

Requirements

Maximum wire length 305 m

(1000 feet) per home-run.

Maximum Load

Currents

See Table 3.

Backup Battery

Calculation

Use Table 4 to calculate the

standby battery capacity when using

the DS7400Xi.

Standby Current

Load

See Table 5.

NOTES:

= The total current output capacity for all auxiliary

devices, including keypads and smoke detectors = 1.5 A

standby, 2.5 A alarm. These ratings are maximum values.

The total combined output cannot exceed the maximum

load current.

= Current draw should be subtracted from either

maximum auxiliary or maximum alarm current draw.

= No more than 2 keypads (0.8 mm/#22 AWG) or 3

keypads (1.0 mm/#18 AWG) are recommended on any

305 m (1000 ft.) run.

= Shared cable is not recommended for keypad,

multiplex, options bus, telephone, or siren wiring.

= Do not use twisted-pair or shielded cable. Do not share

cable with the keypad lines.

2.1 Maximum Load Currents

Table 3: Maximum Load Currents

Maximum Load

Currents

Standby Alarm

Maximum Current by Output:

Not to exceed the maximum load currents listed above in

Standby or Alarm.

Aux. Power and

Keypad

(combined)

1.0 A 1.0 A

Option Power 1.0 A 1.0 A

Bell Output — 1.75 A

Programmable

Output 2

500 mA 500 mA

Loop Power 500 mA 500 mA

2.2 Backup Battery Calculation

Use Table 4 to calculate the standby battery capacity

when using the DS7400Xi.

2.3 Standby Current Load

See Table 5:

• Battery Ah – (20% storage + 0.375 Ah Alarm)

• Table 5 shows the derated battery divided by hours

minus the control panel standby (175 mA).

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 143 144

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Bosch DS7400XiV4-EXP Spécifications Page 9

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