6
Electrical installation
Installation instructions for fieldbus interfaces, field distributors
Manual – EtherCAT
®
Interfaces, Field Distributors
41
Branch circuit protection
Integral solid state short circuit protection does not provide branch circuit protection.
Branch circuit protection must be provided in accordance with the National Electrical
Code and any additional local codes.
For maximum branch circuit protection see table below.
Series
non-semiconductor fuses
inverse time circuit breaker
MOVIMOT
®
MM..D
250 V/500 V minimum, 25 A
maximum
250 V/500 V minimum, 25 A
maximum
Motor overload protection
MOVIMOT
®
MM..D is provided with load and speed-sensitive overload protection and
thermal memory retention upon shutdown or power loss.
The trip current is adjusted to 140 % of the rated motor current.
Ambient temperature
MOVIMOT
®
MM..D is suitable for an ambient temperature of 40 °C, max. 60 °C with
derated output current. To determine the output current rating at higher than 40 °C,
the output current should be derated 3.0 % per °C between 40 °C and 60 °C.
•
Only use certified units with a limited output voltage (V
max
= DC 30 V) and limited
output current (I ≤ 8 A) as an external DC 24 V voltage source.
•
The UL certification only applies for the operation on voltage supply systems with
voltages to ground of max. 300 V. The UL-certification does not apply to operation
on voltage supply systems with a non-grounded star point (IT systems).
25809148/EN – 01/2019