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Specifications subject to change without notice. | USA 160811 | Page 14 of 34
MGC2 – UserManual
PolyGard
®
is a registered trademark of MSR-Electronic GmbH
Reset command by external push-button or one of the operating keys.
Acknowledge the horn relay
Alarm 4
On
Off
Gas concentration higher
lower than threshold
Acknowledging
signal
On
Off
Time
Relay 4
On
Off
Special function Recurrence
Reset command by external push-button or one of the operating keys.
Alarm 4
On
Off
Gas concentration higher
lower than threshold
Acknowledging
signal
On
Off
Relay 4
On
Off
Time
Time
4.5.5 External Operation of Alarm Relay
Assignment of a digital input (DI) for external switching of the alarm relay (ON and/or OFF).
This function has priority to a gas alarm and/or manual switching in the menu “Status Relay” and is subordinate to
the switching of static/flashing and energized/de-energized modes. If external ON and OFF are parameterized on the
same relay, and the both are active at the same time, then only the signal arrived first is performed in this situation.
Symbol
Description
Setting
Status
Function
R 01
Relay No.
Selection relay
DI-ON
External ON
0
As long as digital input closed, relay switches to ON
DI-OFF
External OFF 0
As long as digital input closed, relay switches to OFF
4.5.6 Delay Mode of Alarm Relay
Definition of the switch-on and switch-off delay of the relays
If the latching mode is set for this relay, the respective switch-off delay is without effect.
Symbol
Description
Setting
Status
Function
R 01
Relay No.
Selection relay
0 s
Switch-ON
Delay Time
0
Relay is only activated at the end of the defined time (sec.)
0 sec. = No delay
0 s
Switch-OFF
Delay Time
0
Relay is only deactivated at the end of the defined time (sec.)
0 sec. = No delay
