Hazards That Can Be Caused By The Frequency Inverter - DEMAG DIC 002 Series Operating Instructions Manual

CAUTION
Prohibited activities
Damage to / malfunction of the frequency inverter
Under certain conditions, operation of frequency inverters is prohibited as this can result in malfunctions, equip‐
ment failure or danger to life and limb, e.g. in the case of:
– acidic, corrosive air as coolant,
– operation outside the permitted temperature range,
– operation above the permitted site altitude,
– operation under conditions of high humidity or splashwater,
– Manipulation of electric components.
– Frequency inverters may only be connected to the line supply every 60 seconds. Flick-switching of the line
contactor is not permitted.
– Only AC may be applied to semi-conductor relay EM-S1OUTD on terminal X412 of extension module EM –
UNI-01. DC loads can result in dangerous malfunctions.
– Digital outputs EM-S1OUTD and EM-S2OUTD on terminal X410A of the EM – ABS-01 extension module
must not be programmed with the "41 - Release brake" and "103 – Inv. Error" function parameters. Danger‐
ous malfunctions can occur. These settings are blocked for EM – ABS-01 modules for software version
5.4.2/050-11 and higher.
Safety devices must not be rendered inoperable or modified or used in any way other than that for which they
have been designed.
2.4

Hazards that can be caused by the frequency inverter

WARNING
Non-compliance with the safety regulations/instructions
Failure to comply results in danger to life and limb
Relevant national accident prevention regulations, codes of practice and general safety regulations must always
be observed when our products are operated in order to avoid accidents and damage to machinery. Any failure
to follow the safety warnings in these operating instructions can result in death or personal injury.
DANGER
Electric shock, live components
Contact with live components may result in danger to life and limb.
Only carry out maintenance and installation work,
– if the frequency inverter is at zero voltage,
– if the frequency inverter is secured against accidental restoration of the power supply,
– if you have checked all cables, motor terminals and capacitors with a voltmeter to ensure that they are at
zero potential before starting any work on the frequency inverter. If the light emitting diodes go out or fail,
this does not indicate that the frequency inverter is de-energised.
– with insulated tools.
To ensure that the frequency inverter is switched off independently of the mains supply, a circuit interrupter or a
line contactor must be installed between the power supply and the inverter.
Control, power supply and motor leads must be laid separately.
STO "safe torque off" safety function
See "DIC Safe Torque Off operating instructions"  Tab. 1, Page 2 for further information.
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