YASKAWA MEMOCON GL120 User Manual page 13

1 Introduction and Precautions
1.2.4 Wiring Precautions
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION
• If connecting an inductive load in parallel with DC Input Module, connect the fly-
wheel diode in parallel with the inductive load to prevent surge voltage.
Failure to connect a flywheel diode may result in damage to the DC Input Mod-
ule.
• If connecting an inductive load to the DC Output Module, connect the flywheel
diode in parallel with the inductive load to prevent surge voltage.
Failure to connect a flywheel diode may result in damage to the DC Output
Module.
• If connecting a contact to an inductive load of the DC Output Module, connect the
flywheel diode in parallel with the inductive load to prevent surge voltage.
Failure to connect a flywheel diode may result in damage to the DC Output
Module.
• Insulation is not provided between the channels of the Analog Input Module.
To insulate all the analog signals connected to the Analog Input Module, use a com-
mercial isolation amplifier for each channel.
Incorrect connections may cause damages and malfunctions of the Analog
Input Modules.
• The maximum allowable load current for Analog Output Modules (±10V, 2 chan-
nels) is ±5 mA (2 kΩ). The load resistance must be 2 kΩ or more.
Incorrect connection may cause the output signal to be overloaded, and result in
damages or malfunction of the Analog Output Module.
• The maximum allowable load current for Analog Output Modules (0 to10V, 2 chan-
nels) is 5 mA (2 kΩ). The load resistance must be 2 kΩ or more.
Incorrect connection may cause the output signal to be overloaded, and result in
damages or malfunction of the Analog Output Module.
• The maximum allowable load current for Analog Output Modules (0 to 5V, 2 chan-
nels) is 2.5 mA (2 kΩ). The load resistance must be 2 kΩ or more.
Incorrect connection may cause the output signal to be overloaded, and result in
damages or malfunction of the Analog Output Module.
• The maximum allowable load resistance for Analog Output Modules (4 mA to 20
mA, 2 channels) is 550 kΩ). The load resistance must be 550 kΩ or more.
Incorrect connection may cause the output signal to be overloaded, and result in
damages or malfunction of the Analog Output Module.
• If using Low Voltage Directive compliant products, always use round crimp termi-
nals for M3 screws and mount insulation cover at each crimp when connecting
wires to wiring terminals.
If bare wires are used, an electric shock or a short-circuit may result if the wires
become loose.
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