Operating Instructions Bus Module
MBM-EC-..-MLI-… (EtherCAT)
16
(translation of the original operating instructions) 2540772-01-11/21
10. Electrical connection
WARNING
In the event of a fault, loss of the safety function due to incorrect connection.
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Mounting must be performed only by authorized personnel.
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Lay the connecting cables with protection to prevent the risk of short circuits.
CAUTION
Risk of damage to equipment or malfunctions as a result of incorrect connection.
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All the electrical connections must either be isolated from the mains supply by a safety transform-
er according to EN IEC 61558-2-6 with limited output voltage in the event of a fault, or by other
equivalent insulation measures.
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Power devices which are a powerful source of interference must be installed in a separate location
away from the input and output circuits for signal processing. The cable routing for safety circuits
should be as far away as possible from the cables of the power circuits.
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In order to avoid EMC interference, follow the EMC notes on devices in the immediate vicinity of
the system and its cables.
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To avoid EMC interference, the physical environmental and operating conditions at the in-
stallation site of the device must comply with the requirements according to the standard
DIN EN 60204-1:2006, section 4.4.2/EMC.
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The functional earth must be connected. A bore hole with M6 thread and a pre-assembled
grounding strap are provided on the mounting plate for this purpose. Alternatively, the functional
earth can also be connected via the plugs ML1C, ML2C, XD1, XD2, X1 EC IN and X2 EC OUT.
Important!
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The power supply for additional EtherCAT devices may be forwarded via the bus module MBM. The
total supply current through the system must not be higher than specified in the technical data.
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If the bus module MBM does not appear to function after the application of the operating voltage
(e.g. Power LED does not illuminate), the device must be returned unopened to the manufacturer.
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To ensure the stated degree of protection is achieved, the cover screws must be tightened to a
tightening torque of 1 Nm. Unused connections must be fitted with the covers provided.
10.1. Notes about
Important!
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This device is intended to be used with a Class 2 power source in accordance with UL1310
1)
.
As an alternative an LV/C (Limited Voltage/Current) power source with the following properties can
be used:
- This device shall be used with a suitable isolating source in conjunction with a fuse in accordance
with UL248. The fuse shall be rated max. 3.3 A and be installed in the max. 30 V DC power supply
to the device in order to limit the available current to comply with the UL requirements. Please note
possibly lower connection ratings for your device (refer to the technical data).
1) Note on the scope of the UL approval: only for applications as per NFPA 79 (Industrial Machinery).
The devices have been tested as per the requirements of UL508 and CSA/ C22.2 no. 14 (protection against electric shock and fire).