VAC D500, Manual

Page: 33 / 89

33
Electrical connection
Connect the positioner (EDP300 Control Unit) and remote
position sensor while observing the following instructions:
• A shielded 3-wire cable with a maximum length of 10 m
(33 ft) must be used for the connection.
• Route the cable into the terminal compartment through
the EMC cable glands. Ensure that the shielding is
secured correctly in the EMC cable glands.
• Connect the cables in accordance with the electrical
connections and tighten the screws of the terminals so
that they are hand-tight.
• The electrical connections of the EDP300 Control Unit
and the optional modules are carried out as described in
chapter
Connection on the device on page 36.
• Use wire end ferrules when connecting.
•
If the EDP300 Control Unit is fastened so that it is it non-
conductive, the housing must be grounded
(EDP300 Control Unit and remote position sensor with
the same electric potential); otherwise control deviations
could occur with regard to analog position feedback.
• If the device is being operated on a cylinder, for reasons
associated with linearity you should run automatic
adjustment for the rotary actuator.
• The pneumatic outputs to the actuator must be
connected using pneumatic lines with a minimum
diameter of 6 mm.
Installing the option modules
Note
The supply voltage must be switched off before the option
modules are installed.
1. Loosen the screws for the housing cover and remove it.
2. Position the option module so that the plug points to the
right.
3. Using a small amount of pressure, guide the option module
into the slot from the side and press it down firmly.
4. Secure the option module in the housing by tightening the
screw so that it is hand-tight.
5. Attach the housing cover and screw it on to the housing.
Tighten the screws so that they are hand-tight.
6. If you are using the emergency shutdown module, the rotary
switch on the main printed circuit board must be rotated
into position 1 using a suitable flat-bladed screwdriver.
7. Attach the housing cover and screw it on to the housing.
Tighten the screws so that they are hand-tight.
Note
A maximum of two option modules may be used at the same
time. The module types must be different.
Note
If you are using the emergency shutdown module, the module
must be supplied with 24 V DC at ter85 /
Æ 86.
Otherwise, the positioner will not be able to function
pneumatically (device in pneumatic safety position).
Note
Perform a functional check of the emergency shutdown module
(option) at least every 2 years. For this purpose, the positioner
must move the valve into the safety position when the 24 V DC
signal (te85 /
Æ 86) is interrupted.
Installing the mechanical position indication
1. Loosen the screws for the housing cover and remove it.
2. Attach the shaft extension to the shaft and secure it using
the screw provided.
3. Attach the round position indication to the shaft extension
and rotate it into the desired position.
4. Set the new housing cover (with round sight glass) and screw
it on to the housing. Tighten the screws so that they are
hand-tight.