4 Operational
4.3 Commissioning with control signal terminals (default settings)
124
DC1…20… and DC1…OE1 Variable Frequency Drives
02/20 MN040059EN
www.eaton.com
4.3 Commissioning with control signal terminals (default settings)
DC1 variable frequency drives come pre-configured for their rated mains
voltage and motor output. Once the corresponding motor and mains voltage
are connected, these drives allow for direct operation via their control signal
terminals.
Simplified connecting example
The potentiometer should have a fixed resistance (connection to control
terminals 5 and 7) of at least 1 k
Ω
and up to a maximum of 10 k
Ω
.
A standard fixed resistance of 4.7 k
Ω
is recommended.
When the specified supply voltage is applied at the mains connection
terminals (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 variable frequency drive
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)
The FWD and REV control commands are interlocked (exclusive OR) and
require a rising voltage edge.
The frequency is shown with a minus sign with a start release with a left
rotating field (REV).
DC1 with IP20 degree of protection
Terminal
Designation
L1/L
Single-phase mains
connection
(DC1-1D…, DC1-12…)
Three-phase mains
connection
(DC1-32…, DC1-34…)
L2/N
L3
–
Ground connection
1
Control v24 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
CO
5
Reference v10 V (Output, maximum 10 mA)
6
Frequency reference value f-Set (Input 0 – +10 V)
7
Reference potential (0 V)
PE
PE
W
V
U
M
3 ~
6
7
5
1
2
3
+24 V
FWD
0...+10 V
0 V
+10 V
L3
L1/L L2/N
L
N
L3
L1
L2
REV
f-Soll
￫
Make sure that the enable contacts (FWD/REV) are open before
switching on the mains voltage.
