Electric Wiring; Warnings - Valpes VR-Serie Installations- Und Bedienungsanleitung

Electric wiring

Warnings

Protection
Earth
Earth

Use only one relay for one actuator.

As stipulated in the applicable regulation, the connection to earth contact is compulsory for devices with working volt-
ages exceeding 42V.

The actuator is being always under power, it must be connected to a disconnection system (switch, circuit breaker) to
ensure the actuator's power cut. The latter must be closed to the actuator, easy to reach and marked as being the
disconnecting device for the equipment.

The temperature of the terminal can reach 90°C.

To optimize the installation security, please connect the failure feedback signal (D1 and D2).

In case of long cables, please note the induction current shall not exceed 1mA.

The actuator can tolerate temporary overvoltage of the electrical grid up to ± 10 % of its nominal system operating volt-
age.

The selection of the cables and cable glands: the maximal operating temperature of the cables and cable-glands must
be at least 110°C.

It is necessary to connect all actuators to an electrical cabinet. The power supply cables must have the RATED diame-
ter for the maximum current supported by the actuator and comply with IEC 60227 or IEC 60245 standards.

In order to ensure the IP68 tightness, the cable glands must be used (7 to 12mm cable). Otherwise, the cable glands
must be replaced by a ISO M20 IP68 cap. A cable gland is tight when it has been tighten by one turn ahead of contact
between rubber seal and nut.

The auxiliary limit switches must be connected with rigid wires. If the applied voltage is higher than 42V, the user must
foresee a fuse in the power supply line.

The feedback switches must be powered with the same voltage. The reinforced insulation of the motor control allows
voltages up to 250V AC/DC.
DSBA3400 • Rév. 24/01/2019
Dangerous
Direct current
voltage
ENGLISH
UK
Alternative current
31