3. 4- Wire RS-485 to 2-Wire RS-485 data relay
VII. Power and surge grounding protection
1. External power supply:
UT-501
Photoelectric Isolation Data Repeater can
adopt the product
’
s DC9V power adapter for power
supply or adopt power from other DC power or device.
The power supply voltage is +9---+12V, current
100mA.The connection pins are Terminal :V+,V-
2. Surge grounding protection:
Common repeater has no large energy protector.
The transient high voltage induced in interface data
line tries to release energy to the ground wire via
the minimum resistance route of the device and
thus can easily cause damage to interface parts.
ATC-109N Photoelectric Isolation Data Repeater
can provide 1000W lightning strike and surge
protection power on each line. The rapid Transient
Voltage Suppressor (TVS) can effectively inhibit
lightning and ESD. ATC-109N Photoelectric
Isolation Data Repeater terminal Pin FGND is
designed for surge grounding protection. The user
shall try to avoid hanging by credible grounding to
ensure the safety of communication during
operation
VIII. Trouble shooting
1. Data transmission failure:
A. check to make sure the RS-422 interface is
correctly connected
B. check to make sure the RS-485 interface is
correctly connected
C. check to make sure the power supply voltage
and polarity are correct.
2. Data loss or error:
A. Check the consistency of the data speeds and
formats at the both ends of the data communication
device.
