KROHNE GFM 700 F, Инструкция по установке и эксплуатации

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8.3 ELECTRICAL CONNECTION
8.3.1 General
The GFC 700 F-EEx gas flow converter is always connected to one of two in Section 1.2 (see previous page)
described GFS 700 F/…-EEx ultrasonic gas flow sensors via the factory installed MR04 type connecting cable.
Both apparatus must also be incorporated into the equipotential bonding system via respectively the external M5
clamp terminal that is pressed into the connecting flange at the bottom of the signal converter housing (of GFC
700 F-EEx) and the M8 terminal on the warning plate of the GFS 700 F/…-EEx gas flow sensor.
8.3.2 Gas flow converter
The MR04 connecting cable runs into the flameproof ("EEx d") electronics compartment through an "EEx d"
approved cable gland. The cable is factory installed and tightly clamped by this gland. The gland
may under no
conditions be (re)assembled by the customer , because it could damage the flameproof properties of the
electronics compartment.
The field cables that enter the terminal compartment of the GFC 700 F-EEx flow converter (power supply, current
output and binary outputs) are
non-intrinsically safe . For connection of measuring devices to the output
terminals, the wiring requirements for type of protection of the compartment (standard: increased safety "e",
option: flameproof enclosure "d") must be according to the international or national standard (e.g. DIN VDE 0165,
section 5.6) involved.
For flameproof conduit systems, the terminal compartment must have type of protection flameproof enclosure "d"
according to EN 50018. The conduits must be sealed by "EEx d" approved (within the ATEX 100a directive)
sealing devices (i.e. stopping box) directly at the conduit entrances of the as flameproof enclosure performed
terminal compartment.
The arrangement of the terminals in the terminal compartment is shown by Figure 2 below.
Figure 2: Arrangement of terminals.
NOTE:
The status output is not supported by the current software yet, but will be supported by future software
versions. The current and pulse output are galvanically insulated from each other as well as from all other in-
/output circuits
.
B1 B- B2 I+ I L N
L L
BINARY CURRENT
OUTPUTS OUTPUT
Protective conductor terminal
Pulse Status
output output