MG VOS-ER Instruction Manual

INSTRUCTION MANUAL
2-WIRE POSITION TRANSMITTER
(flameproof, rotary motion type)
BEFORE USE ....
Thank you for choosing us. Before use, please check con-
tents of the package you received as outlined below.
If you have any problems or questions with the product,
please contact our sales office or representatives.
■ PACKAGE INCLUDES:
VOS-ER unit ........................................................................(1)
Lever assembly
Lever ........................................................................(1)
Connecting pin ........................................................(1)
Nailed nut ................................................................(1)
Nut ...........................................................................(1)
Screws for attaching the lever (M5 × 8) .............................(1)
Plain washer (M5) ...............................................................(1)
Toothed washer (M5, external teeth) .................................(1)
Toothed washer (M5, internal teeth) ..................................(1)
Link set ................................................................................(1)
(Provided only when ordered as an option)
Note: Bracket and other components necessary to attach the
VOS-ER to actuator are to be provided by the customer.
■ MODEL NO.
Confirm Model No. marking on the product to be exactly
what you ordered.
WARNING
Explosions could result in death or serious injury:
• The enclosure cover must be completely closed to meet
explosion-proof/flameproof requirements.
• Do not open the cover in explosive atmospheres when the
circuit is alive.
• Before opening the enclosure, wait at least for 60 seconds
after the power is removed.
• Before you connect or disconnect the wiring, turn off the
power supply for safety. Do not connect or disconnect
unless the area is known to be non-explosive.
• Whenever you need to measure voltage across the
terminals, make sure that there is no danger of explosion
in the atmosphere.
• Verify the certification of the product described on the
specification label on the product.
• Verify that the operating atmosphere of the product is
consistent with the appropriate hazardous locations
certifications.
• Verify that the environmental temperature is within the
temperature class required for the area.
Failure to follow these installation guidelines could result
in death or serious injury:
• Make sure only qualified personnel perform the instal-
lation.
MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
MODEL
SAFETY FEATURES & CAUTIONS
Failure to follow the following wiring and installation
guidelines could result in death or serious injury:
■ FLAMEPROOF APPROVAL
• Ex d IIB T5
• TIIS TC14314
• Ambient temperature -5 to +40°C
■ WIRING
• Follow wiring practice according to the local code.
• Make sure that diameter of the applicable cable is correct.
• Electrical wiring into the flameproof enclosure is done by
cable system. Be sure to use the cable gland attached to
the product.
• Be sure to close all unused cable entry conduits with the
stopping plug attached to the product.
• Before turning the power supply on, be sure to close the
enclosure cover tightly.
• Be sure to earth the unit.
• For external earthing or bonding connection a cable lug
shall be used so that the conductor is secured against
loosening and twisting and that contact pressure is
maintained.
POINTS OF CAUTION
■ GENERAL
• Cut power supply to the unit before wiring to it.
• Torque applied to the screws attaching the cover is 2.5 –
3.5 N·m.
■ ENVIRONMENT
• Inside building. If outside, keep away from direct sunlight.
• Operating temperature -5 to +50°C (23 to 122°F)
• Limited to -5 to +40°C (23 to 104°F) for use in an
explosive atmosphere.
• Do not place the unit in a strong magnetic field.
■ ACTUATOR SIDE LEVER
• When the actuator side lever is provided by the customer,
be sure that the diameter of the hole threading the con-
necting pin is 5 millimeters or wider.
Diameter of connecting pin: 5
VOS-ER
0 mm
–0.03
EM-4764 Rev.9 P. 1 / 5