ABB CoriolisMaster FCM2000, Commissioning Instruction

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Commissioning
CI/FCM2000-EN CoriolisMaster FCM2000 EN - 17
5.2.4 Information on changing the installation
Models ME26, ME27, and ME28 can be operated in various applications:
• When connected to an intrinsically safe circuit in Zone 1, as an intrinsically safe device
(Ex ia)
• When connected to a non-intrinsically safe circuit in Zone 1, as an explosion-proof device
(Ex d)
• When connected to a non-intrinsically safe circuit in Zone 2, as a "non-sparking" device (Ex
nA)
If a device which is already installed is to be used in a different application, i.e., its use is to be
changed, the following measures must be taken/checks must be made in accordance with the
applicable standards.
Models ME26/ME27/ME28
1st application 2nd application Measures
Zone 1:
Ex d, non-
intrinsically safe
circuits Zone 1:
Intrinsically safe
circuits
• 500 V
AC/1 min
or 500 x 1.414 = 710 V
DC/1 min
test between terminals 31 / 32, 33 / 34,
41 / 42, 51 / 52, 81 / 82, and / or 97 / 98 and
terminals 31, 32, 33, 34, 41, 42, 51, 52, 81,
82, 97, 98, and the housing
• Visual inspection, particularly of the electronic
circuit boards
• Visual inspection: no damage or explosion
can be detected
Zone 2:
Non-sparking (nA)
• 500 V
AC/1min
or 500 x 1.414 = 710 V
DC/1min
test between terminals 31/32, 33/34, 41 / 42,
51 / 52, 81 / 82, and/or 97 / 98 and terminals
31, 32, 33, 34, 41, 42, 51, 52, 81, 82, 97, 98,
and the housing
• Visual inspection, particularly of the electronic
circuit boards
• Visual inspection: no damage or explosion
can be detected
Zone 1:
Intrinsically safe
circuits Zone 1:
Ex d, non-
intrinsically safe
circuits
• Visual inspection: no damage to the threads
(cover, 1/2" NPT cable glands)
Zone 2:
Non-sparking (nA) • No special measures
Zone 2:
Non-sparking (nA) Zone 1:
Intrinsically safe
circuits
• 500 V
AC/1 min
or 500 x 1.414 = 710 V
DC/1 min
test between terminals 31 / 32, 33 / 34, 41 /
42,
51 / 52, 81 / 82, and / or 97 / 98 and terminals
31, 32, 33, 34, 41, 42, 51, 52, 81, 82, 97, 98,
and the housing
• Visual inspection, particularly of the electronic
circuit boards
• Visual inspection: no damage or explosion
can be detected
Zone 1:
Ex d, non-
intrinsically safe
circuits
• Visual inspection: no damage to the threads
(cover, 1/2" NPT cable glands)