M-system SC100 User Manual

23
SC100/200 Series Users Manual EM-6337-B Rev.15
4.2. ENVIRONMENT
4.2.1. SURROUNDING ENVIRONMENT
Ambient temperature -5 – + 55 °C (23 – 131°F)
Ambient humidity 5 – 90 % RH (non-condensing)
Ambient conditions Not allowed with presence of corrosive/ammable gas or excessive dust.
4.2.2. INSTALLATION INSIDE A CONTROL CABINET
Consider about the ease of operation,
maintenance and access, and the resist-
ance to the environment when designing a
control cabinet.
Temperature
• Provide enough space for ventilation.
• Do not install thermal generating equip-
ment such as heaters, transformers, or
large capacity resistance directly next to
the Controller.
• If there is fear of environmental tempera-
ture higher than 55°C (131°F), consider
usage of ventilation fans or air condi-
tioners. Consider also an alarm system
to alert any failure of cooling devices by
measuring ambient temperature, in order
that such failure does not affect the sys-
tem operation.
• If on the contrary there is fear of low tem-
perature below -5°C (23°F), preheating
using small heaters or lamps installed
inside the panel may be considered.
• See the drawing to the right explaining
typical installation congurations.
Humidity
• Consider the humidity when employing
air conditioners etc, as a rapid change of
temperature might cause dewfall. Dewfall on the surface of printed wiring board might cause malfunction, shortcircuit or
the breakdown of the equipment might be caused. When there is fear of dewfall, keep it always ON or treat preheating.
Vibration and Physical Shock
• Keep away from vibration sources or protect from physical impact. Stabilize the control cabinet with a rubber pad in order
to absorb external vibrations or protect from an impact source.
• Rubber pad may be used to wrap around the impact source such as an electro-magnetic contactor installed in the panel.
Ambient atmosphere
• Isolate the control cabinet from ambient atmosphere containing dust, vapor, oil mist and/or toxic gas. Apply a sealing pack-
ing or pressurize it with clear air.
Protecting Input Signal from Noise
• Install input signal cables separately from power cables, e.g. in independent cable duct, both inside and outside the cabinet.
If they must be close to each other, use shielded cables.
• Install DC input signal cables separately from AC circuits. If they must be close to each other, use shielded cables.
Protecting Output Signal from Noise
• Install output signal cables separately from power cables or other AC circuits. If they must be close to each other, use
shielded cables.
• When driving an inductive load it is recommended to install surge absorbers at the closest point possible from the load.
Controller
Controller
Compulsory Circulation
Controller
Fan
Controller
Compulsory Ventilation
Room Air Conditioning
Controller
Controller
Natural Ventilation
TYPICAL COOLING METHODS
Air Filter
Air Conditioner

M-system SC100 Specifications

General

Brand	M-system
Model	SC100
Category	Controller
Language	English