VS-MKII Control System
Chubb Fire & Security Pty Ltd
Technical Manual
Page 24 of 63
F. Input polarity
Each input (device) connected to the MKII uses a pair of contacts that are either ‘normally closed’
(N/C) to
allow
current to flow from one contact to the other, or, ‘normally open’ (N/O) to
prevent
current from flowing.
The default settings for this channel will not normally need to be changed.
Channel
Switch No.
State
Function
F
1
ON
Detection 1 – N/C
OFF (Default)
Detection 1 – N/O
2
ON
Detection 2 – N/C
OFF (Default)
Detection 2 – N/O
3
ON (Default)
Discharged input – N/C
OFF
Discharged input – N/O
4
ON (Default)
Pressure Low input – N/C
OFF
Pressure Low input – N/O
5
ON
Manual Discharge input – N/C
OFF (Default)
Manual Discharge input – N/O
6
‘unassigned’
7
8
Table 9 – Input polarity
H. Short circuit supervision
All of the inputs and outputs can be enabled or disabled for short circuit supervision.
The default settings will not normally need to be changed.
Channel
Switch No.
State
Function
H
1
ON (Default)
Manual Discharge – Enable S/C supervision
OFF
Manual Discharge – Disable S/C supervision
2
ON
Detection 1 – Enable S/C supervision
OFF (Default)
Detection 1 – Disable S/C supervision
3
ON
Detection 2 – Enable S/C supervision
OFF (Default)
Detection 2 – Disable S/C supervision
4
ON (Default)
Actuation 1 – Enable S/C supervision
OFF
Actuation 1 – Disable S/C supervision
5
ON (Default)
Actuation 2 – Enable S/C supervision
OFF
Actuation 2 – Disable S/C supervision
6
ON
Discharged input – Enable S/C Supervision
OFF (Default)
Discharged input – Disable S/C Supervision
7
ON
Low Pressure input – Enable S/C Supervision
OFF (Default)
Low Pressure input – Disable S/C Supervision
8
ON (Default)
Buzzer output – Enable S/C Supervision
OFF
Buzzer output – Disable S/C Supervision
Table 10 - Short circuit supervision
.