Chapter 4 Electrical Installation
Shenzhen Hpmont Technology Co., Ltd.
- 22 -
MONT72 Series User Manual V1.0
Digital input terminal (X) wiring
Dry contact mode:
The factory default is active low, and the wiring is as shown in Figure 4-3.
NPN mode:
The external controller is the connection mode of the common emitter output of the NPN
type, as shown in Figure 4-3.
Figure 4-3 X terminals wiring
Analog input terminal (AI) wiring
When AI1 is a voltage input, the input voltage range is 0 - 10V, as shown in Figure 4-4.
When AI1 is used as the input terminal of the motor overheat detection signal, the wiring is as shown
in Figure 4-4. The thermistor embedded in the stator coil of the motor is connected to AI1.
Figure 4-4 AI1 terminals wiring
Note:
In order to reduce the interference and attenuation of the control signal, the length of the control cable
should be limited to 50m, and the shielding layer is reliably grounded.
In the case of serious interference, the analog input signal needs to add filter capacitor or ferrite magnetic
ring, as shown in Figure 4-4.
Digital output terminal (DO) wiring
DO is the open collector output, as shown in Figure 4-5.
Figure 4-5 DO terminals wiring
Ex
te
rn
al
co
nt
ro
lle
r
X1
COM
X10
10
1
MCB
NPN
K
X9
K
X2
K
X1
K
...
K
X10
COM
MCB
Dry contact
Thermistor
AI1
GND
PE
AI1
GND
0.022uF
50V
Less than 50m
GND
AI1
+10
Ferrite bead
Twinesignal wiresonferritebeadfor
2-3circlesinthesamedirection
Filter
capacitor
PE
+10V
MCB
MCB
MCB
Po
te
nt
io
m
et
er
DO2
CME
Relay
coils
12
-
30V
DC
COM
+
-
DO1
COM
Relay
coils
12
-
30V
DC
CME
+
-
MCB
MCB
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