ABB AK102 User Manual page 16

...5 ELECTRICAL INSTALLATION
Warning.
• Equipment in this system operates on AC mains
supply voltage
precautions must be taken to avoid the possibility of
electric shock.
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
AK100 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.
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.
Range Switch
Clamp
Cam
Range Switch
(AK102 only)
Mains Power
Supply Fuses
(only 1 fitted
to AK103)
Safety Earth
Terminal (TS1)
3-way Mains
Supply Terminal
Blocks
TB2 not fitted
to AK103
Fig. 5.2 Location of Components Inside Case (Rear View) – Models AK102 & AK103 Display Units
14
electricity. Suitable safety
TB1
1
L N E
TB2
Terminal Blocks for TB4 not fitted
to AK103
Power and Signal
Conventional Circuits
5.1.1 Model 6553 Display Unit – Fig. 5.2
Caution. No connections must be made to the
hazardous area terminals (Terminal Blocks TB5 & TB6)
other than as specified in wiring diagram Fig. 5.3. The
appropriate cable requirements must be strictly
adhered to.
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. 5.2.
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. 5.3 for details.
Make the wiring connections in accordance with the information
given in the wiring diagram Fig. 5.3 and Section 5.1.
Refer Fig. 5.4 for connections to cubicle-mounted display unit.
B1 B2
TB5 TB6
TB3
16
TB4
Terminal Block (TB5 & TB6)
for Katharometer Zero Pots.
Intrinsically Safe Circuits
Continued on page 17.
Type 4689
Upper Display
Unit
Zero Adjustment
for Remote
Katharometers
(only 1 fitted to AK103)
Type 4689
Lower Display Unit
(AK102 only)
TB6 not fitted
to AK103
Zener Diode Safety
Barrier Devices.
Only Barrier B1 Fitted
to Model AK103