6. CONNECTION OF I/O UNITS TO
Sink–type input signals are logic “0” when the contact is open, and logic
“1” when closed.
Source–type input signals are logic “1” when the contact is open, and
logic “0” when closed.
If the output signal line falls to ground when the input signal
is source–type (0 V common), the state is the same when
the contact is closed. For this reason, source–type input
signals are not recommended for ensuring safety.
By CE–marking compliancy, sink–type (+24 V common)
input signals are required.
The output signal of the source output operator’s panel connection unit
is for driving lamps and LEDs on the machine tool operator’s panel. A
MOS FET is used as the driver.
(1)Direct current output signal
The DC output signal is used for driving relays and light emitting
diodes for indication on the machine. A transistor is used as the driver.
(a) Output signal standard is as follows:
Maximum load current when output is ON:
200 mA (including momentary load)
Saturation voltage when output is ON: 1.0 V max.
Withstand voltage: 24 V + 20% (including momentary load)
Leaking current when the output is OFF: 100 mA
Use the following power supply as the external power supply of the
Power voltage: +24 V" 10%
Power current: Sum of maximum load current including
momentary current per board + 100 mA
Power ON timing: Same time as or before control unit
Power OFF timing: Same time as or after control unit
Connect the power supply that meets these specifications
to power terminals DOCOM and 0 V for the output signals.
The maximum current that is allowed to pass to each
DOCOM terminal pin is 2.0 A, and care must be paid to
prevent the sum of the load current from exceeding the
current that is allowed to pass via the DOCOM terminal.
Output Signal Standard
for Source Output