Model 6553 Display Unit - ABB AK101 User Manual

Warning.
• Equipment in this system operates on AC mains
supply voltage
precautions must be taken to avoid the possibility of
electric shock.
• The mains supply to the equipment must be able to
isolate the equipment independently. For example,
use a switched spur or a mains isolator correctly
rated according to the regulations of the country in
which the equipment is being used.
• The means of isolation must be located as close to
the equipment as possible and must not be
obstructed.
Caution.
• Although certain instruments are fitted with internal
fuse protection, a suitably rated external protection
device, either a 3A fuse or miniature circuit breaker
(MCB) must also be fitted by the installer.
• The proper electrical connections and wiring
standards must be achieved to establish the intrinsic
safety of the system, as certified.
• AC input, intrinsically safe DC output and non-
intrinsically safe wiring must all be routed separately.
Fig. 5.1 shows the interconnecting wiring requirements for the
AK10x Gas Analyzer system, that must be strictly observed.
Details of cable requirements, that must be strictly adhered to,
are also given – see Section 5.2.1.
Range Switch
(AK101 only)
Mains Power Supply Fuse
500mA HBC 250 V AC F,
5x20 mm Ceramic
Mains & Case
Earth Terminal
3-way Mains
Supply Terminal
Block
Fig. 5.5 Location of Components Inside Case (Rear View) – Models AK101 and AK104 Display Units
electricity. Suitable safety
Clamp
Cam
TS1
L N E
TB1
Terminal Blocks for
Power and Signal
Conventional Circuits
(TB3 not fitted to AK104)
After completing the wiring, check that the continuity earthing
(grounding) and isolation of all circuits is to the required local
electrical standards for intrinsically safe circuits.
The separate units of the Analyzer system must be
interconnected as shown in Sections 5.1.1, 5.1.2 and 5.1.3.
5.1.1 Model 6553 Display Unit – Fig. 5.5
Caution.
• Do not make connections to the hazardous area
terminals (Terminal Blocks TB5 & TB6) other than
those specified in wiring diagram Fig. 5.6. The
appropriate cable requirements must be strictly
adhered to.
• The earthing of B1 and B2 via TB-IS Earth must be in
accordance with EN 60079-14. The cable must be
insulated and the conductor must be 4mm
sectional area minimum.
Remove the outer case from the back of the unit to gain access
to the terminal blocks.
Make electrical connections through the bottom of the unit into
the terminal blocks immediately above them – see Fig. 5.5.
The alarm and signal outputs on terminal blocks TB3 & TB4 may
be connected as required. The availability of signal outputs vary
with the particular 6553 system – refer to Fig. 5.6 for details.
B1 B2 B3
12
TB5 TB6
TB 3
34
1 16
TB4
Terminal Block (TB5 & TB6)
for Katharometer Zero Pots.
Intrinsically Safe Circuits
(TB6 not fitted to AK104)
5 ELECTRICAL INSTALLATION...
Continued on page 21.
Type 4689 (or CM30)
Digital Display
Zero Adjustment
for Remote Katharometers
(only 1 fitted to AK104)
Type 4689 (or CM30)
Lower Digital Display
(not fitted on AK104)
TB-IS Earth
Connect only to the
Intrinsically Safe Earth
(High Integrity Earth) in
compliance with
EN60079-14
12 12
34 34
Zener Diode Safety
Barrier Devices
(B2, B3 not fitted to AK104)
2 cross
17