DEMAG DC-Com 1, Operating Instructions Manual

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from the thermal contacts in the motor. In there are any discrepancies, the chain hoist is automatically brought to
a safe status and warning or error messages are generated. The positively disconnected emergency-stop contact
on the control pendant immediately opens the circuit for the contactor supply so that the motor is de-energised
and the brake is applied.
As standard, the control system features the following characteristics:
● Operating limit switches for lifting and lowering (optional for DC-Com 1 - 10 with 1/1 reeving, standard for DC-
Com 10 with 2/1 reeving);
● Plug-in connections for control pendant, power supply, motor connection, brake, operating limit switches;
● Connection for the E11 – E34 trolley control system;
● 7-segment display for operating hours, operating status and error messages;
● Infrared interface for wireless transmission of service data;
● Replaceable socket-mounted contactor.
● Signal transmission in steps with 24 V tri-state signals for controlled DC chain hoists (half-wave evaluation);
Demag control pendants are connected via plug-in connectors for manual control. Compact DSC control units,
which are optimised for for Demag DC chain hoists without electric trolleys, are used for such applications;
DSE-10C units are used for applications with electric trolleys.
Please refer to the information contained in the "DC electric accessories" document  Tab. 3, Page 7 for inte‐
grating DC chain hoists into existing installations with contactor control. A Polu box with integrated contactor
control is needed to control pole-changing AC motors (with or without a brake) of long and cross-travel units, see
"Polu box electric accessories" document

Tab. 3, Page 7.
4.4.2 7-segment display for operating status and fault display
Fig. 7
The 7-segment display is arranged on the control board under the electric equipment cover and, after the electric
equipment cover has been removed, can be read through the window on the lower side of the chain hoist (illustra‐
tion differs from scope of delivery).
The 7-segment display is supplied as standard for:
● DC-Com 1 - 5 manufactured from 2007
● DC-Com 10
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