EVCO EVF818P9 - Manual (Page 16)

EVCO S.p.A. EVF818 | Installer manual ver. 1.0 | Code 144F818E104
page 16 of 76
The RS-485 port is for the connection of the controller to the following additional products:
- Parameters Manager set-up software system
- RICS plants monitoring and surveillance systems
- device for recording data and to download recorded data (via USB) EVUSBREC01
- print module PM 100A X9S001.
The port must not be used simultaneously with more than one of these products.
4.1.1 Connection of the terminating resistors
The terminating resistor must be connected in order to reduce the reflections on the signal transmitted along the
cables that connect the user interface to the control model.
To connect the terminating resistors, position the jumper as illustrated in the following drawing.
To disconnect the terminating resistors, position the jumper as illustrated in the following drawing.
4.2 Warnings for the electric connection
- do not use electric or pneumatic screwdrivers on the device terminal board
- if the device has been taken from a cold to hot place, humidity could condense inside; wait about 1 hour before
powering it
- make sure that the power supply voltage, the frequency and the operational electric power of the device,
correspond with those of the local power supply; see chapter 15 "TECHNICAL DATA"
- disconnect the device power supply before proceeding with any type of maintenance
- do not use this device as a safety device
- for repairs and information regarding the device, contact the EVCO sales network.