Honeywell MSR PolyGard 2 MGC2-K - External Override

User Manual - PolyGard
®
2
Multi-Gas-Controller MGC2-K Honeywell
Page 18
PolyGard
®
is a registered trademark of MSR GAMGC2-K_E_0320
Phone 0049(0)8531/9004-0 Fax: 0049(0)8531/9004-54 Specification subject to change without notice
MSR-Electronic GmbH, Bgm.-Schoenbauer-Str. 13, D 94060 Pocking www:msr-electronic.de Made in Germany
After successful acknowledgment the horn remains permanently reset until all assigned alarms for this relay
function are inactive again. Only then it is triggered anew in case of an alarm.
Acknowledge the horn relay
Alarm 4
Relay 4
Gas concentration higher lower than threshold
Acknowledging
signal
On
Of
On
Off
On
Off
Time
Reset command by timer, external push-button or one of the operating keys.
Recurrence of the horn relay
After an alarm has been triggered, the horn will remain active until a reset action is done. After
acknowledgment of the horn relay (via a button or externally via digital input) a timer starts. When this time has
run out and the alarm is still acting, the relay is set again. This process is repeated endlessly as long as the
associated alarm remains active.
Alarm 4
Relay 4
Gas concentration higher lower than threshold
Acknowledging-
signal
On
Off
On
Off
On
Off
Time Time
Reset command by external push-button or one of the operating keys.
8.6.6 External Override
Relay 3:
The parameter setting cannot be changed.
Symbol
Description
Default
Function
DI 0
External ON
0
As long as DI 1-X is closed, relay switches ON
DI 0
External OFF
0
As long as DI 1- X is closed, relay switches OFF.
Manual operation of the alarm relays via DI does not start the "special mode", as this is a deliberate and
configured functionality. The use of the override should be used with caution, particularly the function "External
OFF".
Assignment of a digital input (DI) for the external alarm relay switching on/off.
This function has priority to gas alarm.
If External ON and External OFF are configured to the same relay and both are active at the same time, so in
this state, the External OFF command has priority. In this mode, too, the relay works respecting the parameter
settings "Static / Flashing" and "Energized / De-energized".
External function
 DI 0  DI 0