2. Control Functions
Control functions on the module
SMGB0097 rev.0 - 07/2015
23
2
2.1.10 Forced load up capacity control from external signal
It is possible to force load up according to usage purpose.
a.
Contents of activation
It is possible to force load up from the orders of local control panel.
b.
Time chart
Capacity
control
External
signal X
D
Forced load
up
Normal
operation
Normal
operation
Forced load up
ON
OFF
Normal
c.
Wiring method
2 0V
3
SW5
150
151
152
153
154
SW5
Control board of the chiller unit
Forced load
up switch
Power
source of
the local
control
board
N O T E
• Thermo OFF judgement, protection devices and protection control from the setting temperature of the main unit are
always enabled, and this control gives them priority.
• When using the function to control the number of units (however excluding the connection to group controller),arrange
the wiring to unit no.1 (master unit). This function becomes enabled in all the units when inputting the signal to unit no.1.
• In case of connection to a group controller, the valid orders are those sent from the group controller. Signal input to the
main unit of the chiller unit is invalid.
