Changing The Type Of Protection - ABB VA Master FAM540 Commissioning Instructions

Change from two 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
XP or Ex d
U = 60 V
M
IS or Ex ia
NI or Ex nA
U = 60 V
M
1) Possible only if the maximum signal levels of U
Measures for devices with transmitter with or without LCD display FAM540-E/F.
Original installation
XP or Ex d
U = 60 V
M
IS or Ex ia
NI or Ex nA
U = 60 V
M
1) Possible only if the maximum signal levels of U
Change from one to two columns
New installation
1)
IS or Ex ia — 500 V AC / 1min test between terminals 51 / 52 and 41 / 42 and terminals
— Visual inspection: no explosion, no damage.
NI or Ex nA — 500 V AC / 1min test between terminals 51 / 52 and 41 / 42 and terminals
— Visual inspection: no explosion, no damage.
XP or Ex d — Visual inspection: no damage to threads (cover, surface, 1/2" NPT cable input), cable
NI or Ex nA No special measures required.
IS or Ex ia 1) — 500 V AC / 1min test between terminals 51 / 52 and 41 / 42 and terminals
— Visual inspection: no explosion, no damage.
XP or Ex d — Visual inspection: no damage to threads (cover, surface, 1/2" NPT cable input), cable
≤ 60 V (e.g., PELV or SELV circuits) were not previously exceeded.
M
New installation
IS or Ex ia 1) — 500 V AC / 1min test between terminals 31 / 32 and 41 / 42 and terminals 31 / 32 /
— 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 /
— Visual inspection: No damage, especially to electronics boards.
— Visual inspection: no explosion, no damage.
XP or Ex d — Visual inspection: no damage to threads (cover, surface, 1/2" NPT cable input), cable
NI or Ex nA No special measures required.
1)
IS or Ex ia — 500 V AC / 1min test between terminals 31 / 32 and 41 / 42 and terminals 31 / 32 /
— 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
≤ 60 V (e.g., PELV or SELV circuits) were not previously exceeded.
M
Necessary test steps
51 / 52 / 41 / 42 and the housing.
51 / 52 / 41 / 42 and the housing.
gland, glass, housing, locking device for cover, suitable cable, etc.
51 / 52 / 41 / 42 and the housing.
gland, glass, housing, locking device for cover, suitable cable, etc.
Necessary test steps
41 / 42 and the housing.
41 / 42 and the housing.
gland, glass, housing, locking device for cover, suitable cable, etc.
41 / 42 and the housing.
gland, glass, housing, locking device for cover, suitable cable, etc.
VA Master FAM540 | CI/FAM540-EN Rev. B 15