Bosch DS7240-UK - Table 1: Terminal Descriptions

Page 2 P/N: 4998122677Cr1 Copyright  2003 Bosch Security Systems DS7240-UK Reference Guide
Term Silkscreen Label Description
1,2 18 VAC 18 V, 22 VA; #18 AWG (1.2 mm), Stranded.
3 Earth Ground Symbol Earth Ground.
4 Data, Grn (Green)
5 Data, Yel (Yellow)
Data Bus data on Terminals 4 & 5. Panel supports up to 305 m of #22 AWG (0.8 mm) wire on
these terminals (any configuration).
6,7 Aux Power 12 VDC (-)
8,9 Aux Power 12 VDC (+)
Terminals 6-9 are auxiliary power. 600 mA. Include any programmable outputs (PO 1 to PO 4) not
configured for alarm output. PTC suppressed.
JP3 Aux/Data (RYGB) 4-pin connector to Data Bus and auxiliary power. Use to connect an installer keypad for keypad
programming.
Red (Bat +) Battery (+) spade.
Black (Bat -) Battery (-) spade.
10 PO 4
11 PO 3
Programmable Outputs 3 & 4, up to 500 mA (-). Include in Aux Power calculations for all except
“Alarm” output functions. PTC suppressed.
12 PO 2 Programmable Output 2. 500 mA (-).Include in Aux Power calculations for all except “Alarm”
output functions. Supervised for Horn/Speaker alarm function. PTC suppressed.
13 Alrm + Alarm power. Up to 1,850 mA. PTC suppressed. Provides power for supervised siren driver (PO
2) and Alarm Output (PO 1, A).
14 PO 1, A
15 PO 1, B
Jumper sets PO 1 terminals A (14) and B (15) for “dry” Form “A” contact or for Alarm Output
(using PO 1, A as negative (-) terminal).
16 SMK + Not used.
17 L-1 Sensor Loop 1. Wire length for Sensor Loops 1 to 8 are limited only by the resistance on the loop
and potential EMI problems. Resistance must be < 100 Ω with EOL resistor shorted and detection
devices connected.
18 Com Common for Sensor Loops 1 and 2.
19 L-2 Sensor Loop 2 input.
20 L-3 Sensor Loop 3.
21 Com Common for Sensor Loops 3 & 4.
22 L-4 Sensor Loop 4.
23 L-5 Sensor Loop 5.
24 Com Common for Sensor Loops 5 & 6.
25 L-6 Sensor Loop 6.
26 L-7 Sensor Loop 7.
27 Com Common for Sensor Loops 7 & 8.
28 L-8 Sensor Loop 8.
29 A1
30 B1
Connections for auxiliary devices such as fax machines, answer phones, etc.
31 A
32 B
Connections for incoming phone line.
JP2, PO 1 Select æ Configures PO 1 for Form “A” relay or Alarm Output.
Auxiliary Auxiliary Module and/or Programming Key (PK32) Header.
Table 1: Terminal Descriptions