(4) Parallel system alarm indication
If an alarm occurs at the master or slave unit when performing parallel system operation, all units switch to alarm
mode simultaneously and stop. At the same time, an alarm code for the 1st alarm cause is displayed on the keypad
LED display area of all units.
The unit at which the alarm occurred can be determined from the displayed alarm code. Even if multiple alarms
occur simultaneously, it is only the 1st alarm cause that is displayed as the cause alarm for other stations.
Furthermore, the alarm history displays normal alarm codes.
(5) Setting the number of connected units
It is necessary to set the number of slave units connected by optic fiber for the function code. This is not the setting
for the number of units including the master.
Number of connected units and function codes
Item
Function
H13 Setting
Remarks
Function code H13
Parallel system
No. of slave stations
1
1 1 slave = 2 unit system setting
2
1 2 slave = 3 unit system setting
3
1 3 slave = 4 unit system setting
4
1 4 slave = 5 unit system setting
5
1 5 slave = 6 unit system setting
The H13 setting range when equipped with SIR card is 1 to 2.
Setting example
When using a 2 unit system
Set to H13=1 for all units.
When using a 3 unit system
Set to H13=2 for all units.
If the H13 setting is incorrect, an alarm will occur, and the parallel system will cease to function normally.
Ensure to set correctly.
When alarm occurs at other station
(Alarm trip due to other station cause)
OH2.
0=OH2
External alarm
PRG
→ Program menu
RESET
→ Reset
When alarm occurs at local station
Dot display
OH2
0=OH2
External alarm
PRG
→ Program menu
RESET
→ Reset
(Alarm trip due to local station cause)
Master
H13=1
Slave
H13=1
Master
H13=2
H13=2
H13=2
Slave 1
Slave 1
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