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Specification subject to change without notice.
Printed in USA 131119
Polygard® is a registered trademark of MSR
MGC2-16
PolyGard
®
Multi-Point Controller
User Manual - MGC2-16
Page 12
3.5.3 Latching Mode
Definition of Latching Function
Symbol Description Setting
Status
Function
R 01
Relay No.
Selection Relay
No
Latching Mode No
No
Yes
= Latching Mode non active
= Latching Mode active
Acknowledging of a latching relay in the menu “Relay Status“ is possible only if the sensor value is smaller than
the Staged set point including hysteresis. With this condition then latching is activated.
Example: Relay R2 assigned to Latching mode
Alarm 2
Display in the Menu
Status Relay
Relay 2
Reset in the Menu
Status Relay
On
Off
On
Off
On
Off
R2
Off
R2
On
R2
On
R2
On
R2
Latching
R2
Off
Gas Concentration greater smaller as Threshold
3.5.4 Horn Function
With this parameter the relay is defined as a horn relay and can be acknowledged with the following possibilities.
By pressing one of the arbitrary 6 pushbuttons. (Only possible in the starting menu).
Automatic acknowledging when the time runs out.
By an external pushbutton. (Assigned to an appropriate digital input).
The horn function is activated only if at least one of the two parameters (time or digital input) is set.
Special function Response
After acknowledging the relay via Pushbutton or external DI the time starts. If this time runs out and if the stage is
still exceeded, the relay is energized again.
Symbol Description Setting
Status
Function
R 20
Relay No.
Selection Relay
Reset
Mode
0
0 =
Acknowledge the relay at time run out, or via Pushbutton
1 = Acknowledge the relay via a Pushbutton, after time runs out
and the alarm is still active, then the relay is reactivated.
Time
120
Time in seconds for Automatic acknowledging or before
reactivating alarms defined by Reset function
DI
0
Assignment of the digital input used for remote reset of the horn.
