Electrical Installation With Cable Gland; Safety Instructions - bürkert 3360 Schnellstart

8.3

Electrical installation with cable gland

8.3.1

Safety instructions

WARNING!
Risk of injury due to improper installation.
▶ Installation may be carried out by authorised technicians
only and with the appropriate tools.
▶ Observe general engineering standards & rules during
installation.
Risk of injury due to unintentional activation of the system
and uncontrolled restart.
▶ Secure the system against unintentional activation.
▶ Following installation, ensure a controlled restart.
Use of set-point input 4...20 mA
If several Type 3360, 3361 devices are connected in series
and the electrical power supply for a device in this connected
series fails, the input of the failed device becomes highly
resistive. As a result, the 4...20 mA standard signal fails.
NOTE!
To ensure electromagnetic compatibility (EMC) the functional
earth must be connected to earth with a short line (max. 1 m).
Functional earth must have a cross-section of at least 1.5 mm².
26
8.3.2
To access the terminals, open the device as described below.
1. Remove display module or blind cover:
Devices with ATEX approval or IECEx approval are
secured with a magnetic lock.
The removal of the cover is described in the supplementary
instructions for the electromotive control valves with ATEX
approval and IECEx approval.
NOTE!
Carefully remove the display module so that the connection
cable and HMI interface are not damaged.
Figure 13: Remove blind cover or display module
→
To unlock, turn the display module or the blind cover counter-
clockwise and remove.
NOTE ! For devices with display module, take note of the
connection cable to the HMI interface.
English
Type 3360, 3361
Installing the valve
Access to connection terminals
Unlock blind
cover
Unlock
display
module