Additional requirements for the servo drives concerning the UL approval Page 11
Carry out work in the machine area only, if AC and/or DC supplies are switched off.
Switched off output stages or servo drive enablings are no suitable means of locking. In
the case of a malfunction the drive may accidentally be put into action.
This does not apply to drives with the special “Safe Stop” feature in accordance with EN
954-1 CAT 3 or with the “Safe Torque Off” feature in accordance with EN 61800-5-2.
Initial operation must be carried out with idle motors, to prevent mechanical damages for
example due to the wrong direction of rotation.
Electronic devices are never fail-safe. It is the user’s responsibility, in the case an
electrical device fails, to make sure the system is transferred into a secure state.
The servo drive and in particular the brake resistor, externally or internally, can assume
high temperatures, which may cause serious burns.
2.4.3 Protection against contact with electrical parts
This section only concerns devices and drive components carrying voltages exceeding 50 V. Contact with
parts carrying voltages of more than 50 V can be dangerous for people and may cause electrical shock.
During operation of electrical devices some parts of these devices will inevitably carry dangerous
voltages.
DANGER!
High electrical voltage!
Danger to life, danger due to electrical shock or serious personal injury!
The appropriate DIN, VDE, EN and IEC regulations as well as all national and local safety regulations and
rules for the prevention of accidents apply for the assembly and maintenance of the system. The plant
engineer or the operator is responsible for compliance with these regulations:
Before switching on the device, install the appropriate covers and protections against
accidental contact. Rack-mounted devices must be protected against accidental contact
by means of a housing, for example a switch cabinet. The national regulations for
safety/accident prevention must be complied with!
Always connect the ground conductor of the electrical equipment and devices securely to
the mains supply. Due to the integrated line filter the leakage current exceeds 3.5 mA!
Comply with the minimum copper cross-section for the ground conductor over its entire
length (see for example EN 60800-5-1).
Prior to the initial operation, even for short measuring or testing purposes, always
connect the ground conductor of all electrical devices as per the terminal diagram or
connect it to the ground wire. Otherwise the housing may carry high voltages which can
cause electrical shock.
Do not touch electrical connections of the components when switched on.
Prior to accessing electrical parts carrying voltages exceeding 50 Volts, disconnect the
device from the mains or power supply. Protect it from being switched on again.
For the installation the amount of DC bus voltage must be considered, particularly
regarding insulation and protective measures. Ensure proper grounding, wire
Mounting Instructions „Servo drives ARS 2100 SE“ Version 5.0
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