Specifications

7
To avoid damage to AHC, do not overtighten the screws.
To avoid malfunctions, do not bundle power cables and signal
cables together, or place them in the same metallic conduit.
To reduce the risk of electric shock, turn off the power to AHC
before installing or wiring AHC.
To avoid causing damage or fire, do not apply an AC voltage or a
voltage higher than 32 VDC to the M-NET or the power supply (24
VDC) terminal blocks on AHC ADAPTER.
To avoid damage to AHC, do not make holes on the AHC cover.
Do not use solderless terminals to connect cables to the terminal
block. Solderless terminals may come in contact with the circuit
board and cause malfunctions.
To avoid deformation and malfunction, do not install AHC in direct
sunlight or where the ambient temperature may exceed 55°C
(131°F) or drop below -10°C (14°F).
Do not install AHC on the panel door of the metal control box.
Vibrations or shocks to AHC may damage AHC or cause AHC to
fall.
Do not use AHC for security or disaster prevention purposes. Have
a backup system ready in case of power outage or AHC malfunction
if AHC is to be used for these purposes.
To reduce the risk of erroneous signal output, malfunctions, and
resultant accidents, provide an external safety circuit to ensure a
safe operation of the entire system in case problems occur with
external power supply or with AHC.
To reduce the risk of erroneous signal output, malfunctions, and
resultant accidents, turn on the power to AHC first before turning on
the power to external devices.
To reduce the risk of smoke and fire that may result from
overcurrent continuously transmitted to the output circuit for an
extended period of time due to overload current above the rated
current or due to overload short-circuit, provide an external safety
circuit (e.g., fuse).
When error signals are input through the Digital Input on ALPHA2,
controllers connected to M-NET will display the detection of an error
upon detection of an ON-signal at the Digital Input. Do not connect
a device that would output an ON-signal during normal operation
and an OFF-signal during an error. When connecting such devices,
reverse their circuits.
To ensure proper operation, when temperature signals are
input through the Analog Input on ALPHA2, make sure that the
temperature unit (Celsius/Fahrenheit) settings on the ALPHA2
program and the dipswitch settings on the circuit board of AHC
ADAPTER match.
Do not use AHC in the way that would put lives at risk.
Do not connect control or communication cables to the main circuit
or power wires, and do not run them in close proximity. To reduce
the risk of electrical noise interference and resultant malfunctions,
keep them apart by at least 100 mm.