YOKOGAWA FA-M3V e-RT3 Plus, Hardware Manual

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A3-47
IM 34M06C11-01E
Pollution degree 4:
The pollution generates persistent conductivity.
- Install the FA-M3 in a metallic panel enclosure.
- INDOOR USE ONLY
- The FA-M3 must be installed in a metallic panel enclosure, because the FA-M3 is a
open equipment.
- Use a metallic panel enclosure which complies with the requirement of
EN61010-1 and EN61010-2-201.(IK08 or more.)
- Ground the panel enclosure and the metal plate.
- Connect the both FG and LG terminals of the power supply module to the
grounding terminal or the metal plate with the shortest route possible.
- As a measure to protect against electric shock, design the door of the panel
enclosure such that it can only be opened using a key or special tool, and thus only
accessible to authorized personnel with adequate electrical knowledge such as
system designers or maintenance personnel.
- When the cable is drawn out of metallic panel enclosure, use a flame-retardant
cable of VW-1 class or more.
- Install an external switch or circuit breaker.
As the power supply module of the FA-M3 does not have a built-in power supply
switch, design the system with an external switch or circuit breaker which:
- Is compliant with EN60947,
- Can disconnect all current-carrying conductors.
- Is labeled as the power supply switch for the FA-M3 with its ON and OFF positions
clearly marked.
- Is installed near the FA-M3, within reach of an operator,
- Is not obstructed by nearby objects such that its operation is hindered, and
- does not disconnect the grounding wire from the FA-M3.
- Use the following external power supply unit to DC power supply modules and I/O
modules.
- Output circuit is insulated by double or reinforced insulation from hazardous
voltage.
- Overcurrent protection device is installed. If not, attach a fuse or a circuit breaker
outside.