Section 2: Installation of the frequency converter
No
Name
Description
Note
X1:8
+10V
Power supply of external
systems, i.e. potentiometer of
a referencing-unit
Load capacity of the source:
100 mA
X1:9
GND
Digital Inputs Ground
X1:10
DI1
Digital input 1
Input impedance:
8 kOhm
X1:11
DI2
Digital input 2
The same
X1:12
DI3
Digital input 3
The same
X1:13
DI4
Digital input 4
The same
X1:14
DI5
Digital input 5
The same
X1:15
DI6
Digital input 6
The same
X1:16
+24V
Power supply for digital
inputs and external systems
Load capacity of the source:
200 mA
Table 2.4. Control terminal block X2 – inputs and outputs
No
Name
Description
Note
X2:1
K1
(NO)
Relay output K1, contact NO (normally
open)
Load capacity of
contacts: 1A / 250V
AC
X2:2
K1
(COM)
Relay output K1, contact COM
(common)
The same
X2:3
K1
(NC)
Relay output K1, contact NC (normally
closed)
The same
X2:4
K2
(NO)
Relay output K2, contact NO (normally
open)
The same
X2:5
K2
(COM)
Relay output K2, contact COM
(common)
The same
X2:6
K2
(NC)
Relay output K2, contact NC (normally
closed)
The same
Note:
Control circuit cables should be routed separately from power circuit cables.
2.5. Using contactors and circuit breakers at the frequency converter
output
If it is necessary to use contactors or circuit breakers between the frequency
converter and the electric motor, the switching of the contactor (circuit
breaker) must absolutely(!) be carried out in the voltageless state, when the
converter is stopped (STOP state). Otherwise, there will be damage to the
converter not covered by the warranty.
18
TWERD Power Electronics
