Unitronics VisionV120-22-UN2 User Manual page 5

User Guide
UL Ratings, Programmable Controllers for Use in Hazardous Locations,
Class I, Division 2, Groups A, B, C and D
These Release Notes relate to all Unitronics products that bear the UL symbols used to mark products
that have been approved for use in hazardous locations, Class I, Division 2, Groups A, B, C and D.
▪ This equipment is suitable for use in Class I, Division 2, Groups A, B, C and D, or Non-
Caution
hazardous locations only.
▪ Input and output wiring must be in accordance with Class I, Division 2 wiring methods
and in accordance with the authority having jurisdiction.
▪ WARNING—Explosion Hazard—substitution of components may impair suitability for
Class I, Division 2.
▪ WARNING – EXPLOSION HAZARD – Do not connect or disconnect equipment unless
power has been switched off or the area is known to be non-hazardous.
▪ WARNING – Exposure to some chemicals may degrade the sealing properties of
material used in Relays.
▪ This equipment must be installed using wiring methods as required for Class I, Division
2 as per the NEC and/or CEC.
Panel-Mounting
For programmable controllers that can be mounted also on panel, in order to meet the UL Haz Loc
standard, panel-mount this device on the flat surface of Type 1 or Type 4X enclosures.
Relay Output Resistance Ratings
The products listed below contain relay outputs:
Programmable controllers, Models: M91-2-R1, M91-2-R2C,M91-2-R6C, M91-2-R6
▪
When these specific products are used in hazardous locations, they are rated at 3A res.
▪
when these specific products are used in non-hazardous environmental conditions, they are rated
at 5A res, as given in the product's specifications.
Temperature Ranges
Programmable Logic Controllers, Models, M91-2-R1, M91-2-R2C, M91-2-R6C.
▪ When these specific products are used in hazardous locations, they may be used only within a
temperature range of 0-40ºC (32- 104ºF).
▪ When these specific products are used in non-hazardous environmental conditions, they function
within the range of 0-50ºC (32- 122ºF) given in the product's specifications.
Removing / Replacing the battery
When a product has been installed with a battery, do not remove or replace the battery unless the
power has been switched off, or the area is known to be non-hazardous.
Please note that it is recommended to back up all data retained in RAM, in order to avoid losing data
when changing the battery while the power is switched off. Date and time information will also need to
be reset after the procedure.
UL des zones ordinaires:
Pour respecter la norme UL des zones ordinaires, monter l'appareil sur une surface plane de type de
protection 1 ou 4X
5