Controlli DG501C, User Manual

Page: 5 / 33

1
st
Issue 09/05 5 DMP026E
Precautions
WARNINGS – ELECTRICAL SHOCK HAZARD!
DISCONNECT POWER BEFORE INSTALLING OR REMOVING THE COVER.
General Precautions
•
Follow Static precautions when installing this equipment.
•
Use copper conductors that are suitable for 75°C.
•
Make all connections according to electrical wiring diagram, national and local electrical
codes.
Static Precautions
Static charges damage electronic components. The microprocessor and associated circuitry
are extremely sensitive to static discharge. Use the following precautions when installing,
servicing, or operating the system:
•
Work in a static-free area.
•
Discharge static electricity by touching a known, securely grounded object.
•
Use a wrist strap connected to earth ground when handling the controller’s printed
circuit board.
European Community Directives
This equipment meets all requirements of European Community Directives for Low Voltage
(72/23/EEC), General Safety (92/59/EEC), and Electromagnetic Compatibility (89/336/EEC).
Communication Network Wiring Precautions
•
Use screened cables.
•
If the cable is installed in areas of high RFI/EMI, the cable must be in conduit.
•
Do not mix network wiring with other types of wiring (power, DO, AO, DI or UI).
Digital Output Precautions
•
Do not mix DO wiring with other types of wiring (AO, DI or UI).
•
Output terminals accept 1.5mm² wire. The selected wire gauge must be consistent with
load current.
Power Supply Wiring Precautions
•
This product contains a non-isolated half-wave rectifier power supply and must not be
powered by transformers used to power other devices containing non-isolated full-wave
rectifier power supplies.
•
Do not mix power wiring with communication networks, AO, UI or DI wiring.
•
Use an EN 60742 power transformer supplying a nominal 24Vac (20.4 to 30Vac) with a
minimum rating of 10VA at 50/60Hz (controller only). The supply to transformer must
have a breaker or disconnect.
•
The transformer frame must be grounded.
Location
DG500 controllers are suitable for indoor use only. When selecting a mounting location,
make certain the following conditions are met:
•
Do not install where excessive moisture, corrosive fumes, vibration or explosive vapours
are present.
•
Do not install near large contactors, electrical machinery or welding equipment.