
B–64113EN/01
9. CONNECTION OF I/O Link SLAVE DEVICES
121
Requirements
for DI signals
Contact capacity :
30 VDC 16 mA or more
Leakage current between contact points for an open circuit :
1 mA or less (at 26.4 V)
Voltage drop between contact points for a closed circuit :
2 V or less (including the voltage drop in the cables)
Ratings for the
DO output driver
Maximum load current when turned on :
200 mA or less, including momentary surges (The
maximum current for one DOCOM (power supply)
pin must be 0.7 A or less.)
Saturation voltage when turned on :
1.0 V max when the load current is 200 mA
Dielectric strength :
24 V +20% or less, including momentary surges
Leakage current when turned off :
100 µA or less
External power
supply for DO
Power supply voltage :
24 V "10%
Power supply current :
(Sum of maximum load current including momentary
surges + 100 mA) or more
Power–on sequence :
Turn on the external power supply at the same time
or before turning on the control unit.
Power–off sequence :
Turn off the external power supply at the same time
or after turning off the control unit.
CAUTION
1 Never use the following DO parallel connection.
DV
Relay
0V+24V
DOCOM
0V
DV
9.1.6
I/O Signal
Requirements and
External Power Supply
for DO