4. Electrical Connections
• DOK-CONTRL-DDC+MDD+DLC-ANW1-EN-E1,44 • 01.97
27
Fig 4.4: Mains contactor control in the DDC with DC bus dynamic brake and safety door
monitor
2) If the machine does not require an E-Stop relay, then the ON and OFF buttons can be mounted directly on the DDC.
Q10
F1
Motor
power
connection
DC 24V
= Ready to operate
= Power supply fuse
= Mains contactor in DDC
= Aux. relay for switching K1
= Aux. relay for switching K1
= E-stop relay
= Master switch
= E-stop
= Axis end position
= Power off
= Power on
= Safety door monitor
= Safety door monitor
SSanstNETZ
• with DC bus dynamic brake
• if E-Stop relay is used
PE
L1
L2
L3
X8/15
Bb
X8/16
X8/17
K10
X8/18
K1
X8/7
S2
X8/8
DDC control
X7
3 x AC
(50-60Hz)
A
B
C
D
DST autotransformer
3 x AC 230V
D
A
B
C
X5
ZKS
OFF
1
K3
X8/19
X8/20
ON
K3
K4
K4
K1
K4
K3
A (L1)
C (L3)
ZKS
Bb
F1
K1
K3
K4
K10
Q10
S1
S2
S4
S5
S11
S12
ready signal
S1
S4
Control voltage
S11
S12
S5
K1
E-stop relay
K10
safety doors
closed
Example: Depending upon the safety requirements at the machine,
additional monitoring and locking measures may need to be taken!
E-stop input
DLC
X8/9
X8/10
+24 V
Machine controller
Machine E-Stop
&
UD
1) If the controller of the machine switches the E-stop input of the DLC off while the UD contact is open, then the message "Emergency Off"
is stored every time the power is switched off. During a program cycle, the machine controller can cancel the message "E-STOP" before the
program starts with the use of a CLEAR signal. Under some circumstances, it is possible to cancel error diagnoses. With a general
powering down, the E-Stop input of the DLC does not have to be switched off. During a general powering down, the machine controller can,
e.g., suppress the evaluation of the UD contact. The machine controller can, however, only start the program if the UD contact is closed.
1)
K10
Bridge if no DC bus
dynamic brake is
present (see DDC
Proj. Plan. Manual)
S1
2)
S5
2)
min. 100 ms