11-4
Power connection
ECODRIVE DKC01.1/DKC11.1 Drive Controllers
DOK-ECODRV-DKC01/11.1*-PRJ3-EN-P
11.3 Control circuit to the power connection
The control circuit recommended by INDRAMAT indicates the function
principle.
The choice of the control and its efficiency depends on the range of func-
tions and the efficiency of the entire plant or machine. Therefore, it is the
manufacturer’s responsibility to make this choice.
The stand-by message is output over a relay contact (make contact). If
the stand-by contact closes, the drive is then ready for input power. It is
thus used as a condition for switching in the line contactor (see Fig. 11-7).
Note:
The contactor coil can cause excess voltages when switched
off. The excess voltage can lead to premature failure of the
stand-by contact. To attenuate the excess voltage, use an
overvoltage limiter with diode combination.
The use of varistors as a suppressor circuit is not permitted. Varistors de-
cay and increase their blocking-state currents This can result in prema-
ture failure if the connected components and devices.
The stand-by contact opens when:
•
there is no control voltage for the DKC,
•
if there are errors in the drive.
AP0237.fh5
K1
1)
Integrating the Bb-Kontakte of additional DKCs and BZM in series connection
2)
Switching capacity of Bb-Contacts DC 24V/1A
3)
Drive enable for additional DKCs and BZM in series connection
4)
Use overvoltage limiter with diode combinations
X4/5
X4/6
1)
K1
drive enable
control
K1
3)
X4/2
drive enable at DKC
4)
ext. control vDC 24 V
Safety limit switch
Emergency off
Power off
Power on
Power protection
Bb
2)
Control error
messagef
Fig. 11-7: Principal control switch to the DKC
Stand-by signal contact
Switching states
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