F
Operating instructions
cod. 1592001330
1592001330 XC642C GB r1.0 07.06.2004.doc
rel. 1.0
Pa. 15 / 21
16. Mounting & installation
The instruments are suitable only for internal use. Instruments shall be mounted on panel, in a 29x71 mm
hole, and fixed using the special brackets supplied.
To obtain an IP65 protection grade use the front panel rubber gasket (mod. RG-C) as shown in figure. The
ambient operating temperature range is between 0÷60°C.
Avoid locations subject to heavy vibration, corrosive gases or excessive dirt. The same applies to the
probes. Ensure ventilation around the instrument.
Figura 1
17. Electrical connections
The controller is provided with removable terminal blocks for wires having section not bigger than 1.0 mm
2
:
14 ways for analogue and digital inputs, 12 ways for relays
Note
: terminals 17-19 are connected inside the controller, they are the common for the “relay n°1” with
terminal 15 and “relay n°2” with terminal 16
Terminals 21-22 are connected inside the controller, they are the common for the “relay n°3 ” with terminal
18 and “relay n°4” with terminal 20.
A 5-ways connector is dedicated to the TTL / RS485 interface.
Four connectors having 2-way for 0.2 mm
2
wires are dedicated to: HP digital input, 12Vdc open collector
alarm, LP digital input, 4..20mA analogue output.
Check power supply data before connection wires.
Keep the probe and the digital input wires separate from the power cable.
Do not exceed the maximum rating current for each relay, check technical data and if the load is bigger, use
filtered contactors.
