2 Control Functions
Control functions on the module
SMGB0120 rev.0 - 11/2017
20
d.
Time chart
Control setting value
for overcurrent
protection
Setting value of
current limitation
Maximum current
limitation value
External signal X
B
ON
OFF
e.
Wiring method
SW8
Maximum current
limitation switch
Power
source of
the local
control
board
Control board of the chiller unit
2 0V
3
SW8
154
155
?
N O T E
• When using the function to control the number of units (however excluding the connection to group controller), arrange the wiring to
unit number 1 (master unit). This function becomes enabled in all the units when inputting the signal to unit number 1 (setting value
is also common with the setting value of unit number 1), Signal input to chiller units with address settings between unit number 2 and
8 are invalid.
• In case of connection to a group controller, the valid enabling and setting value orders are those sent from the group controller. Signal
input to the main unit of the chiller unit and its setting values are invalid.
