Eaton DC1-124D1FN-A20N - Page 119

6 Parameters
6.2 Digital and analog inputs
DC1 Frequency Inverter 10/12 MN04020003Z-EN www.eaton.com 115
6.2.2.4 Three-wire control
With the so-called three-wire control, the start and stop commands are set
via spring-return switches (pulse) - similar to a contactor control.
The parameters must be configured as follows:
P-12 = 0  P-15 = 10, 11 ; P-12 = 5  P-15 = 4, 5, 6
Keypad Mode (P-12 = 0)
User PI control mode (P-12 = 5)
Example
P-12 = 0; P-15 = 11
Figure 66: Example of contactor control and three-wire control
Standard control section for a drive with spring-return switch (N/C, N/O) and
latching:
If parameter P-15 = 11, this control section can be recreated with control sig-
nal terminals 2 (DI1) and 3 (DI2), and control signal terminal 4 (DI3) can be
used to activate an operating direction change (FWD  REV) (reversing
starter).
P-15 DI1 DI2 DI3 AI1
10 Normally Open (NO)
Rising edge at start
Normally Closed (NC)
Falling edge at stop
0 = Selected setpoint source
1 = Fixed frequency 1
Setpoint value AI1
11
Normally Open (NO)
Rising edge at start
Normally Closed (NC)
Falling edge at stop
Normally Open (NO)
Rising edge for reverse
Setpoint value AI1
P-15 DI1 DI2 DI3 AI1
4 Normally Open (NO)
Rising edge for start
Normally Closed (NC)
Falling edge for stop
PI feedback
Analog Input
Analog Input
5
Normally Open (NO)
Rising edge for start
Normally Closed (NC)
Falling edge for stop
0 = PI Regulation
1 = Fixed frequency 1
PI feedback
Analog Input
6
Normally Open (NO)
Rising edge for start
Normally Closed (NC)
Falling edge for stop
external fault:
0 = Fault
1 = Run
PI feedback
Analog Input
K1
K1
RUN
STOP
DI1
STOP
+ 24 V
2
DI2
3
RUN
P15 = 11
DI3
4
OFF = FWD
ON = REV