Endress+Hauser NAR 300, Руководство по эксплуатации

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NAR300 system for high temperature Electrical connection
Hauser 35
1 Ex [ia]-dedicated connection cable used (6 to 30 m (19.69 to 98.43 ft): Attached to the product depending on
the option code)
2 Sensor I/F Ex box and NRR262 cable (must be prepared by the customer)
3 For Class A grounding for intrinsic safety/Thread (M4)
1.
Normally, only the FG of a sensor I/F Ex box is shielded; however, depending on
the installation environment, either the GND of NRR262 alone or both the FG of the
sensor I/F Ex box and the GND of NRR262 are connected.
2.
When using a 22 to 26 V
DC
power supply, terminal number L is + (positive) and N
is - (negative).
3.
In order to maintain the Ex [ia] performance, ensure that the power supply voltage
does not exceed 250 V
AC
50/60 Hz and 250 V
DC
during normal time and abnormal
time, respectively.
4.
Although cable (1) that connects NAR300 and a sensor I/F Ex box is included with
the device, a cable (2) that connects a sensor I/F Ex box and NRR262 is not included,
and it must be prepared by the customer. For detailed information on the connection
cables, see the "Process conditions" section.