Dräger Polytron 8100, Инструкция по эксплуатации, Страница: 11 / 254

Installation
Dräger Polytron 8100 11
5. Fasten terminal screws with the correct torque according to
the table tightening torque and wire size for field wiring
terminal, see Section 10.10 on Page 44.
6. Plug connector back into socket and tighten screws.
7. Place PCB unit back into the enclosure.
8. Screw the lid back on, until it is seated (see Section 10.9
on Page 44) and tighten set-screw.
3.5.3 Relay option
If the relay option has been installed, the wires for the alarm
devices will be connected to the 9-pin connector. A piece of
wire insulation (heat shrink tube) and rubber boot are supplied
for extra protection for relay wires.
1. Turn PCB unit over and pull off the 9-pin connector.
2. Cut the heat shrink tube as needed and slide over the relay
wires before insertion into the 9-pin connector.
3. Position the heat shrink tube at the edge of wire insulation
and use a heat gun to shrink the tubing securely onto wire
insulation.
4. Slide rubber boot over the wires.
5. Connect the wires for alarm 1 (pre alarm), alarm 2 (main
alarm) and fault alarm to the terminals, as indicated in the
following wiring table.
6. Fasten terminal screws with the correct torque according to
the table tightening torque and wire size for field wiring
terminals, see Section 10.10 on Page 44.
 With factory default settings and during normal operation,
the relays are energized. This provides “fail-safe”
operation. The terminal designators indicated in the
following wiring table are shown as factory default and
normal operation mode, see Section 7 on Page 36.
7. Plug connector back into socket and tighten screws.
8. Put rubber boot over connector.
NO = Normally open, NC = Normally closed, C = Common
3.6 Electrical installation with Docking
Station
Installing this configuration is a two-step process.
First, the Docking Station is mounted and connected to the
field wires. Second, the main instrument enclosure with the
electronics and sensor is attached to the Docking Station.
The Docking Station can be pre-mounted, wired and sealed
with the supplied cover. Once the site is ready for
commissioning, the instrument is then hooked up to the
Docking Station and taken into operation; avoiding that the
instrument is damaged during the construction phase.
The connection between the Docking Station and the main
instrument is realized via a ‘feedthrough’. Depending on the
instrument selected, there are 2 types of feed-through.
 feedthrough 3 wires for power (part number 4544182)
 feedthrough 9 wire for power and relay (part number
4544169)
3.6.1 Field wiring
For field wiring of Docking Station refer to Instructions for use
9033242.
2-pin connector (voltage supply)
Pin 1 2
Mark PWR+ PWR-
Function V+ V-
4-pin connector fieldbus connections
Pin 1 2 3 4
Mark DATA- A DATA- B GND SHIELD
Functio
n SIGNAL
LINE A SIGNAL
LINE B GROUND SHIELD
NOTICE
Using the fieldbus interface no relays are available.
The fieldbus interface is not in accordance with the
BVS 13 ATEX G 001 X.
WARNING
At voltages >30 V AC or >42.4 V DC, the relay cables
must be enclosed in protective tubing, or double-
insulated cables must be used.
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!
NOTICE
To ensure that a fault is recognized - without having to
look at the instrument - an alarm device must be
connected to the fault relay.
9-Pin connector (relays)
Fault relay A2 relay A1 relay
Pin 1 2 3 4 5 6 7 8 9
Mark FLT
NO
FLT
C
FLT
NC
A2
NO
A2
C
A2
NC
A1
NO
A1
C
A1
NC
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