ABB PositionMaster EDP300 - Operation with Flammable Gases; Operation in Areas with Combustible Dust; Operation in Temperature Class T6; Temperature Data

PositionMaster EDP300 DIGITAL POSITIONER | OI/EDP300-EN REV. D 11
Operation with flammable gases
Observe the following points when operating a device with
flammable gases:
• The device must be used in accordance with the
specifications in the relevant certificate.
• Only the design with the IS ‘Intrinsic Safety ’ type of
protection may be operated with natural gas. The
pneumatic outputs must be vented in non-hazardous
areas.
• During operation with flammable gases, the cover cap for
the air outlets must be removed and the air outlets tubed
separately. Both pipes must not be joined in one pipe.
• The maximum ambient temperature must not up-scale
60 °C (140 °F).
See also Control Drawing 901305 on page 82.
Operation in areas with combustible dust
Observe the following points when operating a device with
combustible dust:
• To prevent loss of type of protection, the housing must
not be opened.
• Only use cable glands which are approved for the type of
protection and correspond to IP rating â IP 6X.
• Danger due to propagating brush discharge must be
avoided.
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 commissioning in temperature class T6, flush the
pneumatic system by applying 1.4 (+/- 0.1) bar until all traces of
any explosive mixture have been removed, yet for at least
5 minutes. Ventilate and evacuate the EDP300 fully several times.
Temperature data
Note
Legibility of the display is guaranteed at an ambient
temperature of Æ20 to 70 °C. At 20 °C and lower, legibility can
become limited. Legibility can be compensated by adjusting
contrast. Contrast adjustment can be made manually directly on
the device.
The display can fail at temperatures below Æ20 °C. Moreover,
functioning of the device is guaranteed up to Æ40 °C.
FM
Temperature class Ambient temperature T
amb
T1 to T4 Æ40 °C to 85 °C
T6 Æ40 °C to 40 °C
CSA
Temperature class Ambient temperature T
amb
T4 Æ40 °C to 85 °C
T6 Æ40 °C to 40 °C