5. Installation, commissioning and operation
Information
Installation and commissioning have to be documented by means of an assembly
report and an inspection certificate. Installation and commissioning must be carried
out exclusively by suitably qualified personnel.
Opening covers or unfastening screws is only permitted if the pertaining description
is available in this manual or in the operation instructions.
Risk of injury caused by high spring tension!
The fail safe unit includes springs which are subject to high tension. When opening
the housing without expert knowledge, the tension release of these springs might
be out of control.
→
Do NOT open FQM housing.
The plant operator is responsible for ensuring power supply protection against
overvoltage and undervoltage.
5.1. Installation
General installation tasks (assembly, electrical connection) have to be performed
according to the operation instructions pertaining to the device and the enclosed
order-specific wiring diagram.
The interface to the actuator controls shown in the wiring diagram must be connected
to suitable actuator controls of the AC 01.2 or ACExC 01.2 type range.
Make sure there is a galvanic isolation of the AC 01.2 or ACExC 01.2 to the signals
of the safety PLC (ESD, FS ready/failure and safe end position feedback). For most
inputs/outputs of the AC 01.2 or ACExC 01.2, this is ensured by the actuator controls.
However, for the analogue inputs and the external 24 V DC supply of the control
logic, suitable measures must be provided within the system.This can be achieved
by using the following sub-assemblies, for example:
●
Galvanically isolated outputs of the safety PLC
●
Buffer amplifier for analogue inputs
●
Galvanically isolated power supply for external 24 V DC supply of the AC 01.2
or ACExC 01.2 and the safety PLC.
●
Galvanically isolated power supply for the PLC and the safety PLC
Install cables as to keep interference on signal cables to minimum (cable installation
in accordance with EMC).The following points should be heeded in particular:
●
Signal cables are susceptible to interference. Motor cables are interference
sources. Lay cables being susceptible to interference or sources of interference
at the highest possible distance from each other.
●
Lay signal cables as close to the earth potential as possible to increase the
immunity status.
●
If possible, avoid laying long cables and make sure that they are installed in
areas being subject to low interference.
●
Avoid long parallel paths with cables being either susceptible to interference or
interference sources.
Low temperature version must be deployed for operation at ambient temperatures
below -30 °C. Power supply must be provided for the integral heating system.
The fail safe unit may be stored at ambient temperatures between –60 °C and +80 °C.
Low temperature version must be deployed for operation at ambient temperatures
below -40 °C. Power supply must be provided for the integral heating system.
Safety functions are connected via the FS module integrated in the fail safe unit.
FS failure NC and FS ready NO outputs must be connected to a SIL 2
compatible input of a safety PLC and assessed.
16
Installation, commissioning and operation with non safety-related actuators
To Next Page
Loading...
