Electrical Installation - nVent RAYCHEM NGC-20-C-E Guide D'installation, D'utilisation Et De Maintenance

2.4 Electrical installation
Figure 9 shows the electrical connection diagram of the NGC-20 controller. The limiter temperature sensor connection is only
Home
EN
applicable with the NGC-20-CL-E. The optional second Pt100 temperature sensor for the control unit is omitted for clarity.
DE
L1
N
PE
FR
PT
RU
Figure 9: electrical connection diagram NGC-20
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14 nVent.com/RAYCHEM
RS485 cable from
previous device
When the device is the last on the communication
line install a wire bridge between the - and
T terminal as shown by the dotted line
RTD 2
W/B R R PE
W/B R R PE RTD 1
PE
W/B R R PE RTD LIMITER
PT100
temperature
sensor(s)
PT100
temperature sensor
Only to be used for the LIMITER
Li Lo Ni No PE
RS485 S
+ –
Alarm
RS485
S + – T
3A Max
Internal RS485
end of line
termination
resistor
To next NGC-20
RS485 cable to
next device
PE PE Lo No
Heater
Heating cable
RAYCHEM-OM-INSTALL130-NGC20CLE-ML-2204