Defensor Mk4 IT 10 Series, Electrical Installation

Page: 17 / 40

17
Connection diagram
A Control p.c.b.
B1 Controller (active)
B2 Controller (passive)
B3 Humidity sensor (only for “IT” units when internal controller is activated)
F1 Supply fuses power unit (quick-acting)
F2 Supply fuse control unit (2 A, slow-acting)
F3 Unit fuse (2 A, slow-acting)
H1 Remote operation and fault indication (option ”Z242“)
H2 Step control board (option “Z243”)
K1 Main contactor power unit
K2 Maximum humidistat or flow monitor (not suitable for On/Off control)
M Ventilation unit (option “Z217/Z218”)
Q Main switch supply power unit/control unit
T Auto-transformer control unit (for voltages >250 V, option ”Z248“)
X1 Connecting jumper (if no ventilation unit connected)
X2 Connecting jumper (if no maximum humidistat or flow monitor connected)
A
M
M
K2
1 2 3 4 5 PE
200...240V
50...60Hz
PE L1 N
F1
PE
L3
L2
L1
Q
L1
L2
L3
PE
PE
K1
Defensor Mk4
SF 5
SF 4
P 3
N 2
V2 1
F3
33 % 66 %
100%
Out (P)
26 25 24 23
SF
SF
N
P
PE
A
H2
H1
"On"
"Steam"
"Service"
"Error"
+4.25VDC
+
-
Signal
max 20V
+4.25VDC
+
-
+4.25VDC
+
-
SF
SF
N
P
PE
Output
230V
Input 400...660V
B1 B2 B3 + -
Y
140
Ω
-10 k
Ω
Sensor
TR116
T
Q
X1
X2
X2
Q
L1 L2
F2
Steam
F2
L1
N
F2