-
-
'11 • SCM-SM-110
(c) Current safe control value: Set this using the jumper wire (J1 or J2) on the outdoor PCB. Control starts
when it exceeds the control value.
1) Switching with jumper wire
Jumper wire (J2)
Short-circuit
(At shipping from factory)
Short-circuit
Jumper wire (J1)
Short-circuit (At shipping from factory)
Current safe
①
Current safe
②
Open
Current safe
③
Current safe
③
2) Control value
Model
Current safe
①
Current safe
②
Current safe
③
Cooling
Heating
Cooling
Heating
Cooling
Heating
SCM40, 45ZJ-S, 50ZJ - S1
0.0
.0
0.0
0.0
.
.
SCM60ZJ - S1
.0
.0
0.0
0.0
.
.
SCM71, 80ZJ - S1
.0
.0
0.0
0.0
.
.
Unit: A
2)
(12) Current safe
(a) Purpose:
(b) Detail of operation:
Cooling
Heating
Lower limit speed
Item
Model
115
SCM40, 45, 50
SCM60, 71, 80, 100, 125
32 rps
32 rps
32 rps
25 rps
�
Model SCM40, 45, 50, 60, 71, 80
Detecting the outdoor unit inverter input (primary) current and the output (secondary) current, if the current values exceed setting
values, the compressor speed (frequency) is controlled to protect the inverter.
Retention
Reduces frequency
at each minute.
Reset
B
A
Current (A)
12
14
16
18
20
22
24
50
40
60 70 80 90 100 110 120 130
Control or reset v
alv
e (A)
Compressor speed (frequency) (rps)
(Fig. C) The control value “A” and the reset value vary depending
on the compressor speed.
Reset valve B
Control valve A
Cooling
Heating
Control
value A
Reset value
B
Control
value A
Reset value
B
Primary
current
side
0
0
Secandary
current
side
Fig.C
Fig.C
Fig.C
Fig.C
◆
Model SCM100, 125
