ABB VA Master FAM540 Training manual

Commissioning Instruction CI/FAM540-EN Rev. B
VA Master FAM540
Metal Cone Variable Area Flowmeter
Measurement made easy

2 CI/FAM540-EN Rev. B | VA Master FAM540
Short product description
Metal Cone Variable Area Flowmeter for measuring the flow
rate of the operating volume or mass flow units (at constant
pressure / temperature), if a physical mass flow unit is
selected.
Device firmware: Version B.20 or higher
Further information
A
dditional documentation on VA Master FAM540 is available
to download free of charge at www.abb.com/flow.
A
lternatively simply scan this code:
Manufacturer
A
BB Automation Products GmbH
Process Automation
Dransfelder Str. 2
37079 Göttingen
Germany
Tel: [phone]
Fax: [phone]
Customer service center
Tel.: [phone]
Mail: [email protected]

VA Master FAM540 | CI/FAM540-EN Rev. B 3
Change from one to two columns
Contents
1Safety............................................................................... 4
1.1General information and instructions .................... 4
1.2Warnings ............................................................. 4
1.3Intended use........................................................ 4
1.4Improper use ....................................................... 4
2Use in potentially explosive atmospheres according to
ATEX and IECEx.............................................................. 5
2.1Device overview................................................... 5
2.1.1Ex-marking .......................................................... 5
2.2Installation instructions......................................... 7
2.2.1Protection against electrostatic discharges .......... 7
2.2.2Sensor insulation ................................................. 7
2.2.3Opening and closing the transmitter housing........ 7
2.2.4Cable entries ....................................................... 8
2.2.5Type of protection Ex d - flameproof enclosure .... 8
2.2.6Electrical connections .......................................... 9
2.3Safety specifications ATEX / IECEx .................... 10
2.3.1Special conditions for type of protection "Ex td"
(dust explosion protection) ................................. 10
2.4Operating instructions........................................ 14
2.4.1Protection against electrostatic discharges ........ 14
2.4.2Changing the type of protection ......................... 15
3Use in potentially explosive atmospheres in accordance
with FM and cCSAus..................................................... 16
3.1Device overview................................................. 16
3.1.1Ex-marking ........................................................ 17
3.2Installation instructions....................................... 18
3.2.1Sensor insulation ............................................... 18
3.2.2Opening and closing the transmitter housing...... 18
3.2.3Cable entries ..................................................... 19
3.2.4Type of protection XP "Explosion proof"............. 19
3.2.5Electrical connections ........................................ 19
3.3Safety specifications FM, cCSAus...................... 21
3.4Operating instructions........................................ 25
3.4.1Protection against electrostatic discharges ........ 25
3.4.2Changing the type of protection ......................... 25
4Product identification.................................................... 26
4.1Name plate ........................................................ 26
5Transport and storage .................................................. 26
5.1Inspection.......................................................... 26
5.2Transport........................................................... 26
5.3Returning devices .............................................. 26
6Installation ..................................................................... 27
6.1Installation conditions......................................... 27
6.1.1Sensor insulation ............................................... 27
6.2Operating conditions.......................................... 28
6.2.1Temperature data .............................................. 28
6.2.2Pressure loss ..................................................... 28
6.2.3Prevention of compression oscillations when
measuring gases................................................ 28
6.2.4Pressure shocks ................................................ 28
6.2.5Solids content in the measuring medium............ 29
6.3Float designs ..................................................... 29
6.3.1Measuring range limits ....................................... 29
6.4Installation.......................................................... 29
6.4.1Flowmeter installation......................................... 30
6.4.2Material loads for process connections .............. 30
6.5Electrical connections ........................................ 31
6.5.1Analog indicator with alarm signaling unit ........... 31
6.5.2Switching amplifier ............................................. 32
6.5.3Analog indicator with transmitter ........................ 32
6.5.4HART output...................................................... 33
7Commissioning.............................................................. 33
7.1General information............................................ 33
7.2Switching on the power supply .......................... 33
7.2.1Inspection after switching on the power supply .. 34
7.3Setting the alarm signaling unit........................... 34
7.4Configuring the programmable output................ 34
7.5Parameterization................................................ 34
7.5.1Menu navigation ................................................ 35
7.5.2User levels ......................................................... 35
8Operation....................................................................... 36
8.1Operating instructions........................................ 36
9Maintenance.................................................................. 36
9.1Safety instructions.............................................. 36
10Specifications................................................................ 36
11Appendix ....................................................................... 37
11.1Declarations of conformity.................................. 37
11.2 Intrinsic Safety Control Drawing SDM-10-A0253 40

4 CI/FAM540-EN Rev. B | VA Master FAM540
1Safety
1.1 General information and instructions
These instructions are an important part of the product and
must be retained for future reference.
Installation, commissioning, and maintenance of the product
may only be performed by trained specialist personnel who
have been authorized by the plant operator accordingly. The
specialist personnel must have read and understood the
manual and must comply with its instructions.
For additional information or if specific problems occur that are
not discussed in these instructions, contact the manufacturer.
The content of these instructions is neither part of nor an
amendment to any previous or existing agreement, promise or
legal relationship.
Modifications and repairs to the product may only be
performed if expressly permitted by these instructions.
Information and symbols on the product must be observed.
These may not be removed and must be fully legible at all
times.
The operating company must strictly observe the applicable
national regulations relating to the installation, function testing,
repair and maintenance of electrical products.
1.2 Warnings
The warnings in these instructions are structured as follows:
DANGER
The signal word "DANGER" indicates an imminent danger.
Failure to observe this information will result in death or
severe injury.
WARNING
The signal word "WARNING" indicates an imminent danger.
Failure to observe this information may result in death or
severe injury.
CAUTION
The signal word "CAUTION" indicates an imminent danger.
Failure to observe this information may result in minor or
moderate injury.
NOTE
The signal word "NOTE" indicates useful or important
information about the product.
The signal word "NOTE" is not a signal word indicating a
danger to personnel. The signal word "NOTE" can also refer
to material damage.
1.3 Intended use
This device is intended for the following uses:
— To transmit fluid or gaseous measuring media.
— To measure the flow rate of the operating volume or mass
flow units (at constant pressure / temperature), if a
physical unit is selected.
The device has been designed for use exclusively within the
technical limit values indicated on the identification plate and
in the data sheets.
When using media for measurement the following points must
be observed:
— Measuring media may only be used if, based on the state
of the art or the operating experience of the user, it can be
assured that the chemical and physical properties
necessary for safe operation of the materials of transmitter
components coming into contact with these will not be
adversely affected during the operating period.
— Media containing chloride in particular can cause
corrosion damage to stainless steels which, although not
visible externally, can damage wetted parts beyond repair
and lead to the measuring medium escaping. It is the
operator's responsibility to check the suitability of these
materials for the respective application.
— Measuring media with unknown properties or abrasive
measuring media may only be used if the operator can
perform regular and suitable tests to ensure the safe
condition of the meter.
The operator bears sole responsibility for the use of the
devices in relation to suitability, intended use and corrosion
resistance of the materials in relation to the measuring
medium.
The manufacturer is not liable for damage arising from
improper or non-intended use.
Repairs, alterations, and enhancements, or the installation of
replacement parts, are only permissible insofar as these are
described in this manual. Approval by ABB Automation
Products GmbH must be sought for any activities beyond this
scope. Repairs performed by ABB-authorized specialist shops
are excluded from this.
1.4 Improper use
The following are considered to be instances of improper use
of the device:
— For operating as a flexible adapter in piping, e.g. for
compensating pipe offsets, pipe vibrations, pipe
expansions, etc.
— For use as a climbing aid, e.g. for mounting purposes
— For use as a support for external loads, e.g. as a support
for piping, etc.
— Material application, e.g. by painting over the name plate
or welding/soldering on parts
— Material removal, e.g. by spot drilling the housing

VA Master FAM540 | CI/FAM540-EN Rev. B 5
Change from tw o to one column
2Use in potentially explosive atmospheres according to ATEX and IECEx
NOTE
For further information on the approval of devices for use in potentially explosive atmospheres, refer to the type-examination
certificates or the relevant certificates at www.abb.com/flow.
2.1 Device overview
The devices are designed for maximum versatility. This is achieved through a combination of several types of protection within
each device. All devices are suitable for use in potentially explosive atmospheres with combustible dust. For detailed installation
instructions and terminal assignments, refer to chapter „Electrical connections“ on page 31.
Zone 1 Zone 2 Standard / No explosion protection Order code1)
Potential equalization
1) Order code "Explosion protection and approvals“ (versions 9, 10); refer to chapter „Ordering information in the data sheet“ on page 36.
2.1.1 Ex-marking
NOTE
— Depending on the design, a specific marking in accordance with ATEX or IECEx applies.
— ABB reserves the right to modify the Ex-marking. Refer to the name plate for the exact marking.
Model FAM54xAx (analog indicator without alarm signaling unit)
Labeling Type of protection Order code1) Limit value table
ATEX II 1/2 G c II T6…T1 Constructional safety A4, A9, B1 „Table 5“ on page 14
II 2D c T85 °C to Tmedium Db Constructional safety
II 2D Ex tb IIIC T85 ˚C… Tmedium Db Dust-explosion protection
1) Order code "Explosion protection and approvals“ (versions 9, 10); refer to chapter „Ordering information in the data sheet“ on page 36.
G10467
B1
(Ex nA)
A4
(Ex nA,
Ex ia)
A9
(Ex nA,
Ex ia,
Ex d)
Ex ia
Ex d
Ex nA
i
Zone 0
Zone 0

6 CI/FAM540-EN Rev. B | VA Master FAM540
Model FAM54xB/C/Dx (analog indicator with alarm signaling unit)
Labeling Type of protection Order code1) Limit value table
ATEX II 1/2G Ex c ia IIC T6 … T1 Ga/Gb Intrinsic Safety A4 „Table 2“ on page 11
II 1/3G Ex c nA IIC T6 ... T1 Ga/Gc Non-sparking materials „Table 4“ on page 13
II 2D Ex tb IIIC T85 ˚C… Tmedium Db Dust-explosion protection „Table 2“ on page 11,
„Table 4“ on page 13
IECEx Ex ia IIC T6 ... T1 Ga/Gb Intrinsic Safety „Table 2“ on page 11
Ex nA II T6 ... T1 Non-sparking materials „Table 4“ on page 13
Ex tb IIIC T85 °C ... Tmedium Db Dust-explosion protection „Table 2“ on page 11,
„Table 4“ on page 13
ATEX II 1/2G Ex c d IIC T6 … T1 Ga/Gb Flameproof (enclosure) A9 „Table 3“ on page 12
II 1/2G Ex c ia IIC T6 … T1 Ga/Gb Intrinsic Safety „Table 2“ on page 11
II 1/3G Ex c nA IIC T6 ... T1 Ga/Gc Non-sparking materials „Table 4“ on page 13
II 2D Ex tb IIIC T85 ˚C… Tmedium Db Dust-explosion protection „Table 2“ on page 11,
„Table 3“ on page 12,
„Table 4“ on page 13
IECEx Ex d IIC T6 ... T1 Ga /Gb Flameproof (enclosure) „Table 3“ on page 12
Ex ia IIC T6 ... T1 Ga /Gb Intrinsic Safety „Table 2“ on page 11
Ex nA IIC T6 ... T1 Ga /Gb Non-sparking materials „Table 4“ on page 13
Ex tb IIIC T85 °C ... Tmedium Db Dust-explosion protection „Table 2“ on page 11,
„Table 3“ on page 12,
„Table 4“ on page 13
ATEX II 1/3G Ex c nA IIC T6 ... T1 Ga/Gc Non-sparking materials B1 „Table 4“ on page 13
II 2D Ex tb IIIC T85 ˚C… Tmedium Db Dust-explosion protection „Table 4“ on page 13
IECEx Ex nA IIC T6 ... T1 Ga / Gc Non-sparking materials „Table 4“ on page 13
Ex tb IIIC T85 °C ... Tmedium Db Dust-explosion protection „Table 4“ on page 13
1) Order code "Explosion protection and approvals“ (versions 9, 10); refer to chapter Ordering information in the data sheet.
Model FAM54xE/Fx (analog indicator with transmitter and with or without LCD indicator)
Labeling Type of protection Order code1) Limit value table
ATEX II 1/2 G Ex c ia IIC T4 … T1 Ga/Gb Intrinsic Safety A4 „Table 1“ on page 10
II 1/3G Ex c nA ic IIC T6 … T1 Ga/Gc Non-sparking materials
II 2 D Ex tb IIIC T85 ˚C… Tmedium Db Dust explosion protection
IECEx Ex ia IIC T4 ... T1 Ga / Gb Intrinsic Safety
Ex nA ic IIC T6 ... T1 Ga / Gc Non-sparking materials
Ex tb IIIC T85 °C ... Tmedium Db Dust explosion protection
ATEX II 1/2G Ex c d IIC T6 … T1 Ga/Gb Flameproof (enclosure) A9 „Table 1“ on page 10
II 1/2 G Ex c ia IIC T4 … T1 Ga/Gb Intrinsic Safety
II 1/3G Ex c nA ic IIC T6 … T1 Ga/Gc Non-sparking materials
II 2 D Ex tb IIIC T85 ˚C… Tmedium Db Dust explosion protection
IECEx Ex d IIC T6 ... T1 Ga / Gb Flameproof (enclosure)
Ex ia IIC T4 ... T1 Ga / Gb Intrinsic Safety
Ex nA ic IIC T6 ... T1 Ga / Gc Non-sparking materials
Ex tb IIIC T85 °C ... Tmedium Db Dust explosion protection
ATEX II 1/3G Ex c nA ic IIC T6 … T1 Ga/Gc Non-sparking materials B1 „Table 4“ on page 13
II 2 D Ex tb IIIC T85 ˚C… Tmedium Db Dust explosion protection
IECEx Ex nA ic IIC T6 ... T1 Ga / Gc Non-sparking materials
Ex tb IIIC T85 °C ... Tmedium Db Dust explosion protection
1) Order code "Explosion protection and approvals“ (versions 9, 10); refer to chapter „Ordering information in the data sheet“ on page 36.
Change from one to two columns

VA Master FAM540 | CI/FAM540-EN Rev. B 7
2.2 Installation instructions
The installation, commissioning, maintenance and repair of
devices in areas with explosion hazard must only be carried
out by appropriately trained personnel.
The safety instructions for electrical apparatus in potentially
explosive areas must be complied with, in accordance with
Directive 94/9/EC (ATEX) and IEC60079-14 (Installation of
electrical equipment in potentially explosive areas).
To ensure safe operation, the requirements of EU Directive
ATEX 118a (minimum requirements concerning the protection
of workers) must be met.
When using in potentially explosive atmospheres, please note:
— Observe the information in chapter „Installation conditions“
on page 27 during installation of the device.
— The maximum ambient temperature for use with
combustible dusts (category II 2D) is Tamb = +60 °C.
— When commissioning the flowmeter, refer to EN 60079-0
regarding use in areas with combustible dust.
— For explosion proof apparatus with PTFE liners, a
minimum medium conductivity of > 10-8 S/m must be
guaranteed.
— If zone 0 is present in the meter tube, the devices may
only be installed in an environment ensuring sufficient
ventilation of zone 1.
— Variable area flowmeters used in accordance with
maximum electrical values for a category 3 device (zone 2)
can also be used without modification as category 2
devices in zone 1 (see chapter „Changing the type of
protection“ on page 15).
2.2.1 Protection against electrostatic discharges
DANGER
Risk of explosion!
The painted surface of the device can store electrostatic
charges. As a result, the housing can form an ignition source
due to electrostatic discharges in the following conditions:
— The device is operated in environments with a relative
humidity of ≤ 30 %.
— This painted surface of the device is therefore relatively
free from impurities such as dirt, dust or oil.
The instructions on avoiding the ignition of hazardous areas
due to electrostatic discharges in accordance with the
EN TR50404 and IEC 60079-32-1 standards must be
observed!
Instructions on cleaning
The painted surface of the device may be cleaned only using a
moist cloth.
2.2.2 Sensor insulation
The device may be insulated. The maximum permissible
thickness of the insulation corresponds to the flange diameter.
See chapter „Sensor insulation“ on page 27.
2.2.3 Opening and closing the transmitter housing
DANGER
Danger of explosion if the device is operated with the
transmitter housing open!
Before opening the transmitter housing, bear in mind the
following:
— Check that a valid fire permit is available.
— Make sure that there is no explosion hazard.
— Before opening the device, switch off the power supply
and wait for t > 2 minutes.
WARNING
Risk of injury due to live parts!
When the housing is open, contact protection is not provided
and EMC protection is limited.
Before opening the housing, switch off the power supply.
Before opening the housing cover, remove the cover
protector, and reattach it after closing the housing cover.
For sealing original spare parts should be used only.
NOTE
Spare parts can be ordered from ABB Service:
Please contact Customer Center Service acc. to page 2 for
nearest service location.

8 CI/FAM540-EN Rev. B | VA Master FAM540
2.2.4 Cable entries
The devices are connected electrically using a cable gland or
alternatively by using conduit systems with pipe fittings.
For this purpose, the devices are delivered with cable glands
or alternatively with 1/2" NPT connection threads for pipe
fittings.
ATEX / IECEx-approved flameproof cable glands made from
metal are supplied with device versions that have type of
protection Ex-d "Flameproof enclosure" (order code A9).
ATEX / IECEx-approved cable glands made from plastic are
supplied with device versions that have type of protection
Ex-ia and Ex-nA.
The various connection possibilities depend on the device-
specific configuration of the explosion protection and the
"Housing material / cable connection" option in accordance
with the ordering information in data sheet DS/FAM540.
To ensure proper routing of cables, the following cable
diameters are required:
— Ex d design: 7.2 ... 11.7 mm (0.28 ... 0.46 inch)
— Other designs: 5.0 ... 9.0 mm (0.20 ... 0.35 inch)
Devices with 1/2" NPT threads and ATEX and IECEx approvals
(except for "Ex d") can be ordered and operated without cable
glands. The operator is responsible for properly installing
threaded conduit connections in accordance with national
regulations (e.g., NEC, CEC, ATEX137, IEC60079-14, etc.).
2.2.5 Type of protection Ex d - flameproof enclosure
Model FAM540, order code A9
The flowmeter is electrically connected via the ATEX / IECEx-
approved cable gland with type of protection Ex-d (see Fig. 1)
located on the device.
Alternatively, the flowmeter can be connected using conduit
systems. In type of protection Ex-d, the connection must be
made with an ATEX / IECEx-approved pipe fitting with a flame
barrier. The mechanical ignition barrier must be installed
directly on the housing.
The preinstalled cable gland must be removed before
connecting a pipe fitting. The M25 x 1.5 / 1/2" NPT adapter
remains unchanged on the device.
NOTE
Pipe fittings with flame barriers are not included in the scope
of supply.
Only ATEX /IECEx-approved pipe fittings with a flame barrier
may be used with type of protection Ex-d. The use of cable
and wire entries, pipe fittings or sealing plugs without an Ex-
d type examination certificate is prohibited.
Unused openings must be closed with Ex-d-approved sealing
plugs.
Fig. 1: Connection using a flameproof cable gland
1Strain relief 2M25 x 1.5 / 1/2"-NPT adapter 3Gasket
4Sleeve 5Union nut
The outside diameter of the unshielded connection cable must
be between 7.2 ... 11.7 mm (0.3 ... 0.5 inch). After installing
the cable in the fitting, tighten the union nut using a torque of
3.25 Nm (2.40 lb/ft). Use additional strain relief in the housing
to secure the connection cable.
G10445
1
345
2

VA Master FAM540 | CI/FAM540-EN Rev. B 9
2.2.6 Electrical connections
Potentially explosive atmosphere Non-hazardous area
Fig. 2: ATEX / IECEx electrical connection
1NAMUR switching amplifier 2Safety barrier
3Potential equalization
Terminal Function
31 / 32 Power supply / current output / HART output
41 / 42 Programmable binary output
Alarm signaling unit (min.)
51 / 52 Alarm signaling unit (max.)
Fig. 3: Terminals 31 / 32, power supply / load
UVPower supply
RBMaximum permissible load in the power supply (e.g. indicator)
The minimum voltage UV= 0 V is based on a load of 0 Ω.
Signal cable
The Ex calculations are based on temperatures of
80 °C (176 °F) at the cable input. For this reason, cables with
a specification of 80 °C (176 °F) must be used.
For cables limited to 70 °C (158 °F), a maximum ambient
temperature of Tamb = 60 °C (140 °F) applies.
The resulting new maximum measuring medium temperatures
are determined as follows:
— Calculate a new ambient temperature:
Tamb new = Tamb + 10 °C (18 °F).
— Use the calculated ambient temperature Tamb new to
determine the new associated permissible measuring
medium temperatures in the tables.
— Please use the limit value tables with the original ambient
temperature Tamb to determine the relevant temperature
class. See chapter „Safety specifications ATEX / IECEx“
on page 10, Tables 1 through 5.
Example:
— Tamb = 50 °C (122 °F) becomes
Tamb new = 60 °C (140 °F).
— Determine the measuring medium temperature
Tamb = 60 °C (140 °F).
— Determine the temperature class for
Tamb = 50 °C (122 °F).
Earthing
Fig. 4: Earthing
1Earthing terminal
2Potential equalization in accordance with EN 60079-0
The FAM540 housing must be correctly earthed in order to
ensure proper function and safe operation.
Copper wires with a minimum cross-section of 6 mm2
(AWG 10) must be used to connect to the potential
equalization.
NOTE
The operator must ensure that when connecting the
protective earth (PE), there are no potential differences
between protective earth (PE) and potential equalization,
even in the event of a fault.
Change from tw o to one column
G11829
+
RB
4...20 mA
31
32
42
41
FAM540-E/F
+
42
41
52
51
U
U
FAM540-B/C/D +
+
#
#
#
E
#
#
#
#
1
2
3
3
G11830
1,8
1,6
1,4
1,2
1
0
0,2
0,4
0,6
0,8
R [kW]
B
14 28 46
20 30
Ex ia
Ex d, Ex na, Ex td
40 50
U [V]
V

10 CI/FAM540-EN Rev. B | VA Master FAM540
2.3 Safety specifications ATEX / IECEx
2.3.1 Special conditions for type of protection "Ex td" (dust explosion protection)
Model FAM54xB/C/D/E/Fx
The following differing temperature data applies to usage in areas with combustible dust.
Order code Ambient temperature Tamb Maximum permissible measuring medium temperature Tmedium
A4, A9, B1 -50°C... +60°C 250 °C
-50°C... +40°C 340 °C
-50°C... +20°C 430 °C
Table 1: Analog indicator with transmitter, with or without LCD indicator
Model FAM54xE/Fx
Type of protection: flameproof enclosure, intrinsic safety, non-sparking equipment, dust explosion protection.
Order
code1)
Labeling Terminals Electrical
values
Tamb
-20 °C ... (-50 °C ... )
Temp.
class
Tmedium
Maximum
Insula-
tion
Heating
jacket
A4, A9 ATEX:
II 1/2 G Ex c ia IIC T4 … T1 Ga/Gb
II 2 D Ex tb IIIC T85 ˚C… Tmedium Db
IECEx:
Ex ia IIC T4 ... T1 Ga / Gb
Ex tb IIIC T85 °C ... Tmedium Db
31 / 322) U
i= 30 V
Ii= 110 mA
Pi= 770 mW
Ci= 5.3 nF
Li= 266 μH
40 °C T1 440 °C No No
40 °C T1 375 °C yes No
40 °C T1 260 °C yes yes
50 °C T1 300 °C yes No
50 °C T2 290 °C yes No
50 °C T2 220°C yes yes
41 / 422) U
i= 30 V
Ii= 30 mA
Pi= 115 mW
Ci= 4.8 nF
Li= 133 μH
60 °C T2 320 °C No No
60 °C T2 230 °C yes No
60 °C T3 170 °C yes yes
70 °C T3 195 °C No No
70 °C T3 150 °C yes No
70 °C T4 125 °C yes yes
A9 ATEX:
II 1/2G Ex c d IIC T6 … T1 Ga/Gb
II 2 D Ex tb IIIC T85 ˚C… Tmedium Db
IECEx:
Ex d IIC T6 ... T1 Ga / Gb
Ex tb IIIC T85 °C ... Tmedium Db
31 / 323) U
max = 46 V 40 °C T1 440 °C No No
40 °C T1 375 °C yes No
40 °C T1 260 °C yes yes
50 °C T1 300 °C yes No
50 °C T2 290 °C yes No
50 °C T2 220°C yes yes
41 / 423) U
max = 30 V
Imax = 30 mA
Pmax = 115 mW
60 °C T2 320 °C No No
60 °C T2 230 °C yes No
60 °C T3 170 °C yes yes
60 °C T4 130 °C yes yes
60 °C T5 95 °C yes yes
60 °C T6 80 °C yes yes
A4, A9,
B1
ATEX:
II 1/3G Ex c nA ic IIC T6 … T1 Ga/Gc
II 2 D Ex tb IIIC T85 ˚C… Tmedium Db
IECEx:
Ex nA ic IIC T6 ... T1 Ga / Gc
Ex tb IIIC T85 °C ... Tmedium Db
31 / 323) U
max = 46 V
40 °C T1 440 °C No No
40 °C T1 375 °C yes No
40 °C T1 260 °C yes yes
50 °C T1 300 °C yes No
50 °C T2 290 °C yes No
50 °C T2 220°C yes yes
41 / 423) U
max = 30 V
Imax = 30 mA
Pmax = 115 mW
60 °C T2 320 °C No No
60 °C T2 230 °C yes No
60 °C T3 170 °C yes yes
70 °C T3 195 °C No No
70 °C T3 150 °C yes No
70 °C T4 130 °C yes yes
1) Order code "Explosion protection and approvals“ (versions 9, 10); refer to chapter Ordering information in the data sheet.
2) For connection to an intrinsically safe circuit.
3) For connection to a non-intrinsically safe circuit. If the device is to be operated subsequently with type of protection "intrinsically safe", then Umax = 60 V may not be
exceeded.

VA Master FAM540 | CI/FAM540-EN Rev. B 11
Table 2: Analog indicator with alarm signaling unit
Model FAM54xB/C/Dx
Type of protection: intrinsic safety, dust explosion protection.
Order
code1)
Labeling Terminals Electrical
values
Tamb
-20 °C ... (-50 °C ... )
Temp.
class
Tmedium
Maximum
Insula-
tion
Heating
jacket
A4, A9 ATEX:
II 1/2G Ex c ia IIC T6 … T1 Ga/Gb
II 2D Ex tb IIIC T85 ˚C… Tmedium Db
IECEx:
Ex ia IIC T6 ... T1 Ga / Gb
Ex tb IIIC T85 °C ... Tmedium Db
41 / 422)
51 / 522)
Ui= 16 V
Ii= 25 mA
Pi= 64 mW
Ci= 50 nF
Li= 250 μH
40 °C T1 440 °C No No
40 °C T1 375 °C yes No
40 °C T1 260 °C yes yes
50 °C T1 300 °C yes No
50 °C T2 290 °C yes No
50 °C T2 220°C yes yes
60 °C T2 320 °C No No
60 °C T2 230 °C yes No
60 °C T3 170 °C yes yes
70 °C T3 195 °C No No
70 °C T3 150 °C yes No
70 °C T4 130 °C yes yes
70 °C T5 95 °C yes yes
60 °C T6 80 °C yes yes
41 / 422)
51 / 522)
Ui= 16 V
Ii= 52 mA
Pi= 169 mW
Ci= 50 nF
Li= 250 μH
40 °C T1 440 °C No No
40 °C T1 375 °C yes No
40 °C T1 260 °C yes yes
50 °C T1 300 °C yes No
50 °C T2 290 °C yes No
50 °C T2 220°C yes yes
60 °C T2 320 °C No No
60 °C T2 230 °C yes No
60 °C T3 170 °C yes yes
70 °C T3 195 °C No No
70 °C T3 150 °C yes No
70 °C T4 130 °C yes yes
60 °C T5 60 °C yes yes
50 °C T5 90 °C No yes
40 °C T6 60 °C yes yes
41 / 422)
51 / 522)
Ui= 16 V
Ii= 76 mA
Pi= 242 mW
Ci= 50 nF
Li= 250 μH
40 °C T1 440 °C No No
40 °C T1 310 °C yes No
40 °C T2 190 °C yes yes
50 °C T2 340 °C No No
50 °C T2 230 °C yes yes
60 °C T2 230°C No No
60 °C T3 160 °C yes yes
70 °C T4 120 °C No No
70 °C T4 100 °C yes yes
40 °C T5 60 °C yes yes
30 °C T6 30 °C yes yes
1) Order code "Explosion protection and approvals“ (versions 9, 10); refer to chapter Ordering information in the data sheet.
2) For connection to an intrinsically safe circuit.

12 CI/FAM540-EN Rev. B | VA Master FAM540
Table 3: Analog indicator with alarm signaling unit
Model FAM54xB/C/Dx
Type of protection: flameproof enclosure, dust explosion protection.
Order
code1)
Labeling Terminals Electrical
values
Tamb
-20 °C ... (-50 °C ... )
Temp.
class
Tmedium
Maximum
Insula-
tion
Heating
jacket
A9 ATEX:
II 1/2G Ex c d IIC T6 … T1 Ga/Gb
II 2D Ex tb IIIC T85 ˚C… Tmedium Db
IECEx:
Ex d IIC T6 ... T1 Ga / Gb
Ex tb IIIC T85 °C ... Tmedium Db
41 / 422)
51 / 522)
Umax = 16 V
Imax = 25 mA
Pmax = 64 mW
40 °C T1 440 °C No No
40 °C T1 375 °C yes No
40 °C T1 260 °C yes yes
50 °C T1 300 °C yes No
50 °C T2 290 °C yes No
50 °C T2 220°C yes yes
60 °C T2 320 °C No No
60 °C T2 230 °C yes No
60 °C T3 170 °C yes yes
70 °C T3 195 °C No No
70 °C T3 150 °C yes No
70 °C T4 130 °C yes yes
70 °C T5 95 °C yes yes
60 °C T6 80 °C yes yes
41 / 422)
51 / 522)
Umax = 16 V
Imax = 52 mA
Pmax = 169 mW
40 °C T1 440 °C No No
40 °C T1 375 °C yes No
40 °C T1 260 °C yes yes
50 °C T1 300 °C yes No
50 °C T2 290 °C yes No
50 °C T2 220°C yes yes
60 °C T2 320 °C No No
60 °C T2 230 °C yes No
60 °C T3 170 °C yes yes
70 °C T3 195 °C No No
70 °C T3 150 °C yes No
70 °C T4 130 °C yes yes
60 °C T5 60 °C yes yes
50 °C T5 90 °C No yes
40 °C T6 60 °C yes yes
41 / 422)
51 / 522)
Umax = 16 V
Imax = 76 mA
Pmax = 242 mW
40 °C T1 440 °C No No
40 °C T1 310 °C yes No
40 °C T2 190 °C yes yes
50 °C T2 340 °C No No
50 °C T2 230 °C yes yes
60 °C T2 230°C No No
60 °C T3 160 °C yes yes
70 °C T4 120 °C No No
70 °C T4 100 °C yes yes
40 °C T5 60 °C yes yes
30 °C T6 30 °C yes yes
1) Order code "Explosion protection and approvals“ (versions 9, 10); refer to chapter Ordering information in the data sheet.
2) For connection to a non-intrinsically safe circuit. If the device is to be operated subsequently with type of protection "intrinsically safe", then Umax = 60 V may not be
exceeded.

VA Master FAM540 | CI/FAM540-EN Rev. B 13
Table 4: Analog indicator with alarm signaling unit
Model FAM54xB/C/Dx
Type of protection: non-sparking materials, dust explosion protection.
Order
code1)
Labeling Terminals Electrical
values
Tamb
-20 °C ... (-50 °C ... )
Temp.
class
Tmedium
Maximum
Insula-
tion
Heating
jacket
A4, A9,
B1
ATEX:
II 1/3G Ex c nA IIC T6 ... T1 Ga/Gc
II 2D Ex tb IIIC T85 ˚C… Tmedium Db
IECEx:
Ex nA IIC T6 ... T1 Ga / Gc
Ex tb IIIC T85 °C ... Tmedium Db
41 / 422)
51 / 522)
Umax = 16 V
Imax = 25 mA
Pmax = 64 mW
40 °C T1 440 °C No No
40 °C T1 375 °C yes No
40 °C T1 260 °C yes yes
50 °C T1 300 °C yes No
50 °C T2 290 °C yes No
50 °C T2 220°C yes yes
60 °C T2 320 °C No No
60 °C T2 230 °C yes No
60 °C T3 170 °C yes yes
70 °C T3 195 °C No No
70 °C T3 150 °C yes No
70 °C T4 130 °C yes yes
70 °C T5 95 °C yes yes
60 °C T6 80 °C yes yes
41 / 422)
51 / 522)
Umax = 16 V
Imax = 52 mA
Pmax = 169 mW
40 °C T1 440 °C No No
40 °C T1 375 °C yes No
40 °C T1 260 °C yes yes
50 °C T1 300 °C yes No
50 °C T2 290 °C yes No
50 °C T2 220°C yes yes
60 °C T2 320 °C No No
60 °C T2 230 °C yes No
60 °C T3 170 °C yes yes
70 °C T3 195 °C No No
70 °C T3 150 °C yes No
70 °C T4 130 °C yes yes
60 °C T5 60 °C yes yes
50 °C T5 90 °C No yes
40 °C T6 60 °C yes yes
A4, A9,
B1
ATEX:
II 1/3G Ex c nA IIC T6 ... T1 Ga/Gc
II 2D Ex tb IIIC T85 ˚C… Tmedium Db
IECEx:
Ex nA IIC T6 ... T1 Ga / Gc
Ex tb IIIC T85 °C ... Tmedium Db
41 / 422)
51 / 522)
Umax= 16 V
Imax = 76 mA
Pmax = 242
mW
40 °C T1 440 °C No No
40 °C T1 310 °C yes No
40 °C T2 190 °C yes yes
50 °C T2 340 °C No No
50 °C T2 230 °C yes yes
60 °C T2 230°C No No
60 °C T3 160 °C yes yes
70 °C T4 120 °C No No
70 °C T4 100 °C yes yes
40 °C T5 60 °C yes yes
30 °C T6 30 °C yes yes
1) Order code "Explosion protection and approvals“ (versions 9, 10); refer to chapter Ordering information in the data sheet.
2) For connection to a non-intrinsically safe circuit. If the device is to be operated subsequently with type of protection "intrinsically safe", then Umax = 60 V may not be
exceeded.

14 CI/FAM540-EN Rev. B | VA Master FAM540
Table 5: Analog indicator without alarm signaling unit
Model FAM54xAx
Type of protection: constructional safety, dust explosion protection
Order
code1)
Labeling Terminals Electrical
values
Tamb
-20 °C ... (-50 °C ... )
Temp.
class
Tmedium
Maximum
Insula-
tion
Heating
jacket
A4, A9,
B1
ATEX:
II 1/2 G c II T6…T1
II 2D c T85 °C to Tmedium
II 2D Ex tb IIIC T85 ˚C… Tmedium Db
IECEx:
Ex tb IIIC T85 °C ... Tmedium Db
n.a. n.a 70 °C T1 440 °C yes yes
70 °C T2 290 °C yes yes
70 °C T3 190 °C yes yes
70 °C T4 130 °C yes yes
70 °C T5 95 °C yes yes
70 °C T6 80°C yes yes
Change from one to two columns
2.4 Operating instructions
2.4.1 Protection against electrostatic discharges
DANGER
Risk of explosion!
The painted surface of the device can store electrostatic
charges. As a result, the housing can form an ignition source
due to electrostatic discharges in the following conditions:
— The device is operated in environments with a relative
humidity of ≤ 30 %.
— This painted surface of the device is therefore relatively
free from impurities such as dirt, dust or oil.
The instructions on avoiding the ignition of hazardous areas
due to electrostatic discharges in accordance with the
EN TR50404 and IEC 60079-32-1 standards must be
observed!
Instructions on cleaning
The painted surface of the device may be cleaned only using a
moist cloth.

VA Master FAM540 | CI/FAM540-EN Rev. B 15
Change from tw o to one column
2.4.2 Changing the type of protection
Depending on the model, the device may be designed to be installed in one of the applications listed. If you plan to use a device
that was installed in one type of protection rating in a different type of protection rating, some measures must be taken before
connecting voltage to the device.
Measures for devices with alarm signaling unit FAM540-B/C/D:
Original installation New installation Necessary test steps
XP or Ex d
UM= 60 V
IS or Ex ia1) — 500 V AC / 1min test between terminals 51 / 52 and 41 / 42 and terminals
51 / 52 / 41 / 42 and the housing.
— Visual inspection: no explosion, no damage.
NI or Ex nA — 500 V AC / 1min test between terminals 51 / 52 and 41 / 42 and terminals
51 / 52 / 41 / 42 and the housing.
— Visual inspection: no explosion, no damage.
IS or Ex ia XP or Ex d — Visual inspection: no damage to threads (cover, surface, 1/2" NPT cable input), cable
gland, glass, housing, locking device for cover, suitable cable, etc.
NI or Ex nA No special measures required.
NI or Ex nA
UM= 60 V
IS or Ex ia1) — 500 V AC / 1min test between terminals 51 / 52 and 41 / 42 and terminals
51 / 52 / 41 / 42 and the housing.
— Visual inspection: no explosion, no damage.
XP or Ex d — Visual inspection: no damage to threads (cover, surface, 1/2" NPT cable input), cable
gland, glass, housing, locking device for cover, suitable cable, etc.
1) Possible only if the maximum signal levels of UM≤ 60 V (e.g., PELV or SELV circuits) were not previously exceeded.
Measures for devices with transmitter with or without LCD display FAM540-E/F.
Original installation New installation Necessary test steps
XP or Ex d
UM= 60 V
IS or Ex ia1) — 500 V AC / 1min test between terminals 31 / 32 and 41 / 42 and terminals 31 / 32 /
41 / 42 and the housing.
— Visual inspection: No damage, especially to electronics boards.
— Visual inspection: no explosion, no damage.
NI or Ex nA — 500 V AC / 1min test between terminals 31 / 32 and 41 / 42 and terminals 31 / 32 /
41 / 42 and the housing.
— Visual inspection: No damage, especially to electronics boards.
— Visual inspection: no explosion, no damage.
IS or Ex ia XP or Ex d — Visual inspection: no damage to threads (cover, surface, 1/2" NPT cable input), cable
gland, glass, housing, locking device for cover, suitable cable, etc.
NI or Ex nA No special measures required.
NI or Ex nA
UM= 60 V
IS or Ex ia1) — 500 V AC / 1min test between terminals 31 / 32 and 41 / 42 and terminals 31 / 32 /
41 / 42 and the housing.
— Visual inspection: No damage, especially to electronics boards.
XP or Ex d — Visual inspection: no damage to threads (cover, surface, 1/2" NPT cable input), cable
gland, glass, housing, locking device for cover, suitable cable, etc.
1) Possible only if the maximum signal levels of UM≤ 60 V (e.g., PELV or SELV circuits) were not previously exceeded.
Change from one to two columns

16 CI/FAM540-EN Rev. B | VA Master FAM540
Change from tw o to one column
3Use in potentially explosive atmospheres in accordance with FM and cCSAus
NOTE
For further information on the approval of devices for use in potentially explosive atmospheres, refer to the type-examination
certificates or the relevant certificates at www.abb.com/flow.
3.1 Device overview
The devices are designed for maximum versatility. This is achieved through a combination of several types of protection within
each device. All devices are suitable for use in potentially explosive atmospheres with combustible dust. For detailed installation
instructions and terminal assignments, refer to chapter „Electrical connections“ on page 19.
Class 1 Division 1 / Zone 1 Class 1 Division 2 / Zone 2 Standard / No explosion protection Order code1)
Potential equalization
1) Order code "Explosion protection and approvals“ (versions 9, 10); refer to chapter Ordering information in the data sheet.
G11831
F4
(NI, IS)
F3
(NI, IS,
XP)
IS
XP
NI
i
Zone 0
Zone 0

VA Master FAM540 | CI/FAM540-EN Rev. B 17
3.1.1 Ex-marking
NOTE
— Depending on the design, a specific marking in accordance with FM applies.
— ABB reserves the right to modify the Ex-marking. Refer to the name plate for the exact marking.
Model FAM54xAx (analog indicator without alarm signaling unit and model FAM54xB/C/Dx (analog indicator with alarm signaling unit)
Labeling Type of protection Order code1) Limit value table
FM XP / CL I / DIV 1 / GP ABCD / T6…T1
CL I, ZN 1 AEx d IIC T6…T1
Explosionproof F3 „Table 2“ on page 22
IS / CL I,II,III / DIV 1 / GP ABCDEFG / T6..T1
CL I, ZN 1 AEx ia IIC T6…T1
Intrinsic Safety F3, F4 „Table 1“ on page 21,
„Table 2“ on page 22
DIP / CL II, III / DIV 1 / GP EFG / T6...T1 Dust-Ignitionproof
NI /CL I,II / DIV 2 / GP ABCDFG / T5...T1
NI / CL III T5...T1
CL II, ZN 2 AEx nA II T5...T1
Non-Incendive F3, F4 „Table 1“ on page 21,
„Table 2“ on page 22,
„Table 3“ on page 23
cCSAus XP / CL I / DIV 1 / GP BCD / T6…T1
Ex d IIC T6...T1
Explosionproof F3 „Table 2“ on page 22
IS / CL I,II,III / DIV 1 / GP ABCDEFG / T6..T1
Ex ia IIC T6...T1
Intrinsic Safety F3, F4 „Table 1“ on page 21,
DIP / CL II, III / DIV 1 / GP EFG / T6...T1
DIP A21 TA 85°C to Tmedium
Dust-Ignitionproof F3, F4 „Table 1“ on page 21,
„Table 2“ on page 22,
„Table 3“ on page 23
NI /CL I,II / DIV 2 / GP ABCDFG / T5...T1
NI / CL III T5...T1
Ex nA II T5...T1
Non-Incendive F3, F4 „Table 3“ on page 23
1) Order code "Explosion protection and approvals“ (version digit No. 9, 10); refer to chapter „Ordering information in the data sheet“ on page 36.
Model FAM54xE/Fx (analog indicator with transmitter / with or without LCD display)
Labeling Type of protection Order code1) Limit value table
FM XP / CL I / DIV 1 / GP ABCD / T6…T1
CL I, ZN 1 AEx d IIC T6…T1
Explosionproof F3 „Table 4“ on page 24
IS / CL I,II,III / DIV 1 / GP ABCDEFG / T4..T1
CL I, ZN 1 AEx ia IIC T4…T1
Intrinsic Safety F3, F4
DIP / CL II, III / DIV 1 / GP EFG / T6...T1 Dust-Ignitionproof
NI /CL I,II / DIV 2 / GP ABCDFG / T4...T1
NI / CL III T4...T1
CL II, ZN 2 AEx nA [nL] IIC T6...T1
Non-Incendive
cCSAus XP / CL I / DIV 1 / GP BCD / T6…T1
Ex d IIC T6...T1
Explosionproof F3
IS / CL I,II,III / DIV 1 / GP ABCDEFG / T4..T1
Ex ia IIC T4...T1
Intrinsic Safety F3, F4
DIP / CL II, III / DIV 1 / GP EFG / T6...T1
DIP A21 TA 85°C to Tmedium
Dust-Ignitionproof
NI /CL I,II / DIV 2 / GP ABCDFG / T4...T1
NI / CL III T4...T1
Ex nA [nL] IIC T6...T1
Non-Incendive
1) Order code "Explosion protection and approvals“ (version digit No. 9, 10); refer to chapter „Ordering information in the data sheet“ on page 36.
Change from one to two columns

18 CI/FAM540-EN Rev. B | VA Master FAM540
3.2 Installation instructions
The installation, commissioning, maintenance and repair of
devices in areas with explosion hazard must only be carried
out by appropriately trained personnel.
The operator must strictly observe the applicable national
regulations with regard to installation, function tests, repairs,
and maintenance of electrical devices. (e.g. NEC, CEC).
Intrinsic Safety Control Drawing
NOTE
For intrinsically safe installations, the FAM540 must be
installed as illustrated in the "Intrinsic Safety Control
Drawing".
See chapter "Appendix"
3.2.1 Sensor insulation
The device may be insulated. The maximum permissible
thickness of the insulation corresponds to the flange diameter.
See chapter „Sensor insulation“ on page 27.
3.2.2 Opening and closing the transmitter housing
DANGER
Danger of explosion if the device is operated with the
transmitter housing open!
Before opening the transmitter housing, bear in mind the
following:
— Check that a valid fire permit is available.
— Make sure that there is no explosion hazard.
— Before opening the device, switch off the power supply
and wait for t > 2 minutes.
WARNING
Risk of injury due to live parts!
When the housing is open, contact protection is not provided
and EMC protection is limited.
Before opening the housing, switch off the power supply.
Before opening the housing cover, remove the cover
protector, and reattach it after closing the housing cover.
For sealing original spare parts should be used only.
NOTE
Spare parts can be ordered from ABB Service:
Please contact Customer Center Service acc. to page 2 for
nearest service location.

VA Master FAM540 | CI/FAM540-EN Rev. B 19
3.2.3 Cable entries
Devices with FM and CSA approval are delivered for electrical
connection using conduit systems that have 1/2" NPT
connection threads and are sealed with dust protection plugs.
Alternatively, cable glands with 1/2" NPT thread can be used
for the connection. National guidelines (NEC, CEC) must be
observed.
For operation with type of protection XP "Explosionproof", the
installation instructions in chapter "„Type of protection XP
"Explosion proof"“ on page 19" must be observed.
3.2.4 Type of protection XP "Explosion proof"
For operation with type of protection XP "Explosion proof", the
connection is made using Ex-approved pipe fittings with a
flame barrier with type of protection XP.
In Group A and B hazardous areas, the flame barriers must be
installed within a distance of 46 cm (18.1 inch) from the
device.
When using cable glands for the connection, Ex-approved
cable glands with type of protection XP or Ex-d must be used
(see Fig. 5).
NOTE
There must be a separate XP type examination certificate for
the pipe fitting.
The use of standard cable and wire entries and sealing plugs
is prohibited.
The pipe fitting is not included in the scope of supply.
Fig. 5: Connection using a flameproof cable gland
1Strain relief 2M25 x 1.5 / 1/2"-NPT adapter 3Gasket
4Sleeve 5Union nut
The outside diameter of the unshielded connection cable must
be between 8.0 ...11.7 mm (0.3 ... 0.5 inch).
The cable gland must be dimensioned accordingly.
After installing the cable in the gland, tighten the union nut to a
torque of 3.25 Nm (2.40 lbf/ft).
Use an additional strain relief device in the housing to secure
the connection cable.
3.2.5 Electrical connections
Fig. 6: FM / cCSAus electrical connection
1FM Approved IS Barrier 2Potential equalization
Terminal Function
31 / 32 Power supply / current output / HART output
41 / 42 Binary output
Alarm signaling unit (min.)
51 / 52 Alarm signaling unit (max.)
Fig. 7: Terminals 31 / 32, power supply / load
UVPower supply
RBMaximum permissible load in the power supply (z. B. indicator)
The minimum voltage UV= 0 V is based on a load of 0 Ω.
G10445
1
345
2
G10446
1,8
1,6
1,4
1,2
1
0
0,2
0,4
0,6
0,8
R [kW]
B
14 28 46
20 30
IS
XP, DIP, NI, S
40 50
U [V]
V

20 CI/FAM540-EN Rev. B | VA Master FAM540
Installation instructions
The concept of intrinsic safety enables multiple intrinsic safety
devices with FM or CSA approval to be interconnected,
without entity parameters being examined specifically, subject
to observation of the following conditions:
— Uoor Voc or Vt≤ 0 V max, Ioor Isc or It≤ I max, Caor Co≥ Ci
+ Ccable, Laor Lo≥ Li+ Lcable, Po≤ Pi.
— For installation in Class II and III environments, dust-proof
ignition blocks must be used.
— Devices connected to such apparatus must not use or
generate rms or direct voltages in excess of 250 V.
— Installation must meet the requirements of ANSI /
ISA RP 12.6 "Installation of Intrinsically Safe Systems for
Hazardous (Classified) Locations" and the National
Electrical Code (ANSI / NFPA 70) sections 504, 505 and
CEC.
— The configuration of the associated apparatus must have
Factory Mutual Research and CSA approval in accordance
with the entity concept.
— Devices must be installed in compliance with the
manufacturer-supplied installation drawing of the
associated apparatus.
— Changes to drawings are only permitted subject to prior
approval from Factory Mutual Research and CSA.
— Only shielded twisted pair cables may be used (see
above).
NOTE
For intrinsically safe installations, the FAM540 must be
installed as illustrated in the "Intrinsic Safety Control
Drawing".
See chapter "Appendix"
Earthing
Fig. 8: Earthing
1Earthing terminal
2Potential equalization in accordance with EN 60079-0
The FAM540 housing must be correctly earthed in order to
ensure proper function and safe operation.
Copper wires with a minimum cross-section of 6 mm2
(AWG 10) must be used to connect to the potential
equalization.
NOTE
The operator must ensure that when connecting the
protective earth (PE), there are no potential differences
between protective earth (PE) and potential equalization,
even in the event of a fault.
Signal cable
For ambient temperatures below 5 °C (41 °F) or above
40 °C (104 °F), signal cables that are suited for the
minimum/maximum ambient temperatures in question must be
used.
Only use signal cables made from copper, copper-coated
aluminum, or aluminum.
The recommended tightening torque for the terminals is
0.8 Nm (7 in. lb) or higher, in accordance with the
specification.
Power supply
Installation must comply with the requirements of the
National Electric Code®(ANSI / NFPA70).
Unless specified otherwise in regional or national standards,
power supply lines must be dimensioned to AWG 20.
Installation must be carried out as outlined in the latest edition
of the manufacturer's instruction manual.
A power supply with the following requirements must be used
to provide power:
— SELV (safety extra-low voltage) with LPS (current-limited
source) and double or reinforced insulation.
— Maximum output current of 8 A (current-limited output).
— In accordance with National Electric Code®
(ANSI / NFPA70) connected to NEC class 2.
Change from tw o to one column