DANGER
Risk of explosion through incorrect connection of the external sensors
The explosion protection is endangered when the external sensors p/T (in the stack) as
well as the optics purge air monitor (on the purge air fixture) are not connected to the
intrinsically safe terminals provided in the connection unit.
b
Always connect the external sensors p/T (in the stack) as well as the optics purge
air monitor (on the purge air fixture) to the intrinsically safe terminals specified in
the connection unit for this purpose.
b
Observe the intrinsically safe connection values for the Ex barriers fitted in the
evaluation unit in the Operating Instructions delivered.
DANGER
Risk of explosion through unsuitable screw fittings and lines
b
Only use lines (according to EN60079-14) with suitable outer diameters.
b
Close off cable inlets “vapor-proof” (virtually gas-tight).
b
Protect lines against electrostatic charges.
b
Only open those cable inlets to be used for installing cables. Keep the plugs. Refit
the original plug when a cable inlet must be closed again afterwards.
Electromagnetic compatibility
NOTE
This is a Class A product. This device can cause radio interference in household envi‐
ronments and therefore the user must take suitable measures when necessary.
6.2
Connection overview
Observe zone separation,
see "Zone of use GM700 Ex 3G components", page 21
.
1
4
3
1
2
5
6
7
8
9
Figure 13: GM700 Ex 3G / zone 2 connection diagram
1
Power supply
2
Warning signal, Ex-p control FS840
6
ELECTRICAL INSTALLATION
36
O P E R A T I N G I N S T R U C T I O N S | GM700 Ex
8019532/100Q/V1-1/2018-08 | SICK
Subject to change without notice