Yaskawa iQpump Drive User Manual - Manual (Page 225)

E.4 Third Party Serial Communication Converters RS232-RS485 / USB - RS485 Converters
YASKAWA TM.iQp.01 iQpump Drive User Manual 225
◆ AC and DC Reactor
When using models P7U20P4 thru P7U2018 and P7U40P4 thru P7U4018 on a power supply transformer with a capacity of 600kVA or
more, install an AC or DC reactor. The reactor improves the input power factor and provides protection to the rectifier circuit within the
iQpump drive.
◆ Noise filter
Use a noise filter exclusively for the iQpump drive if radio noise generated from the iQpump drive causes other control devices to
malfunction.
E.4 Third Party Serial Communication Converters
RS232-RS485 / USB - RS485 Converters
The iQpump drive has been tested with these Serial/USB to RS/485 converters listed in this document and approved for use with the
PumpScada software. Identical converters can be used but proper communication is not guaranteed.
◆ RS232 Serial Port to RS485 Converters
Manufacturer: Telebyte, Inc
Model: Telebyte T285
Website: www.telebyteusa.com
Table E.5 T285 Module Dipswitch Settings
Note: DB25M to DB9F and serial cable are not included with the converter.
Manufacturer: ATEN
Model: IC485AI
Website: www.aten-usa.com/
TD Control RTS Control 220 Ohm Term Two-Wire Mode Four-wire Mode
Mode SW1 SW2 SW3 SW4 SW5
RS-485
Two-Wire Transmitter
enabled by TD ON OFF OFF ON OFF