9
NT311 ETH
1)
3-digit display for values measured
9)
DOWN key
2)
Control unit series
10)
Enter/Reset button
3)
FAN signalling (red) LED
11)
Programming/Setting key
4)
HEATER signalling (yellow) LED
12)
Led/relay test key
5)
FAULT (red) LED
13)
Modbus communication RS (green) LED
6)
ALARM (yellow) LED
14)
3-digit display viewing of parameters
7)
MODE display mode selection key
15)
Man mode selection (yellow) LED
8)
UP key
16)
Scan mode selection (yellow) LED
FRONT PANEL
1
2
3
4
5
6
7
8
9
10
11
12
14
13
15
16
1MN0199 REV. 0
TPU SENSOR CONNECTION NOTES
The TPU sensor must be connected to the control unit using the appropriate cable; the electrical connections are shown
on page 12/13.
Note: All the signal transportation cables must strictly:
•
be separated from those of power
•
be created with shielded cable with twisted conductors
•
have a section of at least 0.25 mm²
•
be twisted if the shield does not exist
•
be firmly fixed in the terminal blocks
•
have tin-plated or silver-plated conductors
