Use In Potentially Explosive Atmospheres - ABB VAC D500 Commissioning Instructions

2 Use in potentially explosive
atmospheres
Change from one to two columns
Depending on the type of explosion protection, an Ex name
plate is attached to the positioner, to the left of the main name
plate. It displays the number of the Ex certificate together with
the Ex designation of the device.
Requirements / preconditions for safe operation of the
positioner:
IMPORTANT (NOTE)
Observe the specifications applicable to the
device and special conditions in accordance with
the relevant certificate.
— Manipulation of the device by users is not permitted.
Modifications to the device may only be performed by the
manufacturer or an explosion protection specialist.
— The device may only be supplied with instrument air that is
free of oil, water, and dust.
IMPORTANT (NOTE)
Operation with flammable gas
— During operation with flammable gas, the
device must be used in accordance with the
specifications in the relevant certificate.
— Only the design with the "Intrinsic Safety" type
of protection has been approved for operation
with natural gas. The pneumatic outputs must
be vented in non-Ex areas.
— The maximum ambient temperature must not
exceed 60 °C (140 °F).
— During operation with flammable gases in type
of protection "Ex n", the device may only be
operated with approved cable glands.
Change from two to one column
IMPORTANT (NOTE)
Use in areas with combustible dust
— To prevent loss of its type of protection, the
housing may not be opened.
— Only use cable glands that are approved for
the type of protection and correspond to
degree of protection ≥ IP 6X.
— Avoid hazardous electrostatic discharge.
IMPORTANT (NOTE)
Operation in temperature class T6
During operation in temperature class T6, when
the equipment is partially or fully depressurized,
ensure that there is no possibility of an explosive
atmosphere getting into the pneumatic system or
that any explosive atmosphere is removed prior to
compression by taking suitable action.
When starting up in temperature class T6, flush
the pneumatic system with 1.4 (+/- 0.1) bar until
all traces of explosive mixture have been removed
(at least 5 minutes). Ventilate and evacuate the
EDP300 fully several times.
D500
| CI/EDP300-EN Rev. A 9