Safety Precautions - Omron G3ZA Manual

Safety Precautions

!WARNING
Do not touch the terminals and the wires while power is
being supplied. Doing so may possibly result in electric
shock. Make sure that the terminal cover is installed
before using the product.
!CAUTION
Do not allow pieces of metal, wire clippings, or fine
metallic chips or filings from installation to enter the
product. Doing so may occasionally result in electric
shock, fire, or malfunction.
Do not use the product in locations of flammable or
explosive gases. Doing so may occasionally result in
minor or moderate explosion, causing minor or moderate
injury, or property damage.
Do not attempt to disassemble, repair, or modify the
product. Doing so may occasionally result in minor or
moderate injury due to electric shock.
Perform correct setting of the product according to the
application. Failure to do so may occasionally cause
unexpected operation, resulting in minor or moderate
injury, or damage to the equipment.
Ensure safety in the event of product failure by taking
safety measures, such as installing a separate monitoring
system to provide alarms for preventing excessive
temperature rise. Product failure may occasionally
prevent control operation, resulting in damage to the
connected facilities and equipment.
Tighten the terminal screws securely using a tightening
torque within the following ranges. Loose screws may
occasionally cause fire, resulting in minor or moderate
injury, or damage to the equipment.
Terminal screws: 0.40 to 0.56 N·m
■ Precautions for Safe Use
1. Do not use the product in the following locations.
• Locations subject to direct radiant heat from heating equipment
• Locations where the product may come into contact with water
or oil
• Locations subject to direct sunlight
• Locations where dust or corrosive gases (in particular, sulfuric
or ammonia gas) are present
• Locations subject to extreme temperature changes
• Locations where icing or condensation may occur
• Locations subject to excessive shocks or vibration
2. Use this product within the rated load and power supply.
3. Ensure that the rated voltage is achieved no longer than 2 s after
turning the power ON.
4. Use/store within the rated temperature and humidity ranges.
5. Minimum mounting distance of G3ZA is 10 mm.
When mounting the G3ZA near the SSRs, mount the G3ZA so as
to not interfere with the heat dissipation of the SSR.
6. Use the specified size of insulated-type crimp terminals (M3,
width: 5.8 mm max.) for wiring and attach insulative sleeves. To
connect bare wires, use AWG22 (cross section: 0.326 mm
AWG14 (cross section: 2.081 mm
terminals and AWG22 (cross section: 0.326 mm
2
(cross section: 1.039 mm ) for other terminals.
7. Be sure to confirm the correct terminal and polarity when wiring
the terminal block and connectors.
8. Do not connect any conductors to unused terminals.
2
) to
2
) to wire the power supply
2
) to AWG16
9. In order to prevent inductive noise, wire the lines connected to the
product separately from power lines carrying high voltages or
currents. Do not wire in parallel with or in the same cable as
power lines. Other measures for reducing noise include running
lines along separate ducts and using shield lines.
10.Attach a surge suppressor or noise filter to peripheral devices that
generate noise (in particular, motors, transformers, solenoids,
magnetic coils, or other devices that have an inductance
component).
Do not install the product near devices generating strong high-
frequency fields or surges. When using a noise filter, check the
voltage and current and install it as close to the product as
possible.
11.For a safety disconnection of the power-line in the application, the
equipment must be provided with disconnecting devices suitable
for isolation.
(e.g., circuit breakers defined in IEC60947-2, power switches
defined in IEC60947-3, power plugs, etc.)
Version 1.0 Usage Precautions
Version 1.0 is for single-phase loads only. Connect a single-phase
zero-cross SSR. Do not connect a three-phase SSR, or to an SSR
that is not magnet relay or zero-cross.
Version 2.0 Usage Precautions
• Check the G3ZA settings and select the correct SSR from the
following when wiring an SSR.
• SSR with zero-cross function for single-phase heaters
• SSR without zero-cross function for single-phase heaters
• Three-phase SSR
Do not connect a magnet relay.
• Check the G3ZA settings and select the correct CT from the
following when wiring a CT.
• E54-CT1
• E54-CT3
• G3ZA-CT150L
Multi-channel Power Controller
G3ZA
9