Eaton DC1-124D1FN-A20N - Page 90

4 Operation
4.3 Commissioning with control signal terminals (default settings)
86 DC1 Frequency Inverter 10/12 MN04020003Z-EN www.eaton.com
Connecting example for three-phase motor
 Connect the frequency inverter according to the connection example
above for the simple commissioning with the specified default settings
(see connecting example above).
The potentiometer should have a fixed resistance (connection to control sig-
nal terminals 5 and 7) of at least 1 k, up to a maximum of 10 k.
A standard fixed resistance of 4.7 k is recommended.
Make sure that the enable contacts (FWD/REV) are open before switching on
the mains voltage.
When the specified supply voltage is applied at the mains connection termi-
nals (L1/L, L2/N, L3), the switched-mode power supply unit (SMPS) in the
internal DC link will be used to generate the control voltage and light up the
7-segment LED display (STOP). At this point, the frequency inverter will be
ready for operation (correct operating status) and in Stop mode.
The start enable signal is sent by activating one of the digital inputs with
+24 V:
• Terminal 1: FWD = Clockwise rotating field (Forward Run)
• Terminal 2: REV = Counterclockwise rotating field (Reverse Run); no
function in DC1-S2… (no start enable)
The FWD and REV control commands are interlocked (exclusive OR) and
require a rising voltage edge.
Connecting example for three-phase motor Terminal designation
L1/L Single-phase power supply
connection
(DC1-1D…, DC1-12…)
Three-phase power supply
connection
(DC1-32…, DC1-34…)
L2/N
L3 –
 Ground connection
1 Control voltage +24 V (output, maximum 100 mA)
2 FWD, Start release clockwise rotating field
3 REV, Start release left rotating field
U Connection for three-phase ac motor
(three-phase motor)
V
W

5 Setpoint value voltage +10 V (Output, maximum 10 mA)
6 Frequency reference value f-Set (Input 0 – +10 V)
7 Reference potential (0 V)
PE
PE
WVU
M
3 ~

675
1 23
+24 V
FWD
0...+10 V
0 V
+10 V
L3
L1/L
L2/N
L
N
L3L1
L2
REV
f-Soll
￫
If the connections for the setpoint value potentiometer cannot
be clearly allocated with terminals 5, 6 and 7, you should set the
potentiometer to about 50 % before giving the start release
(FWD/REV) for the first time.