maxon EC motor
EC-i30 IE Document ID:: rel8710
7
Operating Manual Edition: March 2019
© 2019 maxon motor. Subject to change without prior notice.
2 Installation
Electrostatic Sensitive Devices (ESD)
The built-in electronics can be destroyed by externally applied electronic discharges during transport,
installation, and during operation.
• Make sure to wear working cloth in compliance with ESD.
• Handle the device with extra care.
• Limit the voltage between flange and any live parts to 500 VDC.
Possible irreversible Damage of Motor
• Until completion of the installation, individual components can be permanently damaged by improper
handling. Therefore, handle the components with particular care.
• Max. torque of flange screws is 1.1 Nm (grade 8.8 screws).
• A high heat dissipation by mounting to a large-scale metallic structural element permits higher power
output of the motor. However, in turn, the circuit board temperature protection can no longer ade-
quately protect the winding.
• Cable outlet preferably downwards.
2.1 EMC-compliant Installation
Cable length ≤300 mm:
• Usually, no shielding is required.
• Star wiring recommended if several EC-i30 with integrated electronics are supplied by a com-
mon power supply.
Cable length >300 mm:
• The voltage drop in the connection cable must be minimized by choosing a sufficiently large
wire cross section.
• In electromagnetically harsh environments, use of shielded cables connected to ground at both
ends can improve immunity against interferences.
• Release cable shielding on one side if 50/60 Hz interference problems occur.
• The incidence surface for interferences can be reduced by shortening the unshielded original
connection cable.
• Immunity against interferences and speed stability in case of fluctuating loads can be accom-
plished by routing the set speed value signal separately in a shielded cable that is put to ground
on both sides. In addition to the set speed value signal, a second ground (GND) line must also
be carried in this separate cable, but only connected on the motor side. The external set value
speed signal must be potential-free.
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