janitza GridVis Collector, User Manual

Page: 35 / 116

35
GridVis
®
Collector www.janitza.de www.janitza.de GridVis
®
Collector
5. 3. 1 USB/RS-485 converter
The scope of delivery of the GridVis
®
Collector includes
the USB/RS-485 converter with a length of 1.8 m (part
no.: 15.06.107). The cable length can be extended up
to 20 m if required:
Fig.:
USB/RS-485 converter
Lead assignment RS-485 interface on the UMG
"Yellow" lead
Terminal A of the RS-485
interface of the measurement
device
"Orange" lead
Terminal B of the RS-485
interface of the measurement
device
ATTENTION
Communication errors/malfunctions between the
GridVis
®
Collector and the measurement device!
Omitting a termination resistor when connecting a device
via the USB/RS-485 converter results in communication
errors or data transmission errors!
· Also connect a termination resistor (120Ω - part no.
52.00.008) between terminals A and B of the RS-485
interface of your measurement device using the USB/
RS-485 converter cable!
Connect your USB/RS-485 converter cable to terminals
A and B of the RS-485 interface of your measurement
device (UMG 103-CBM, UMG 96RM-CBM or UMG 96-
PA) with a termination resistor (120Ω), observing the
cable lead assignments.
You can monitor the communication between the mea-
surement device and the GridVis
®
Collector:
· Red LED (query of the measurement device) and
· Green LED (Sending data from the UMG to the
GridVis® Collector).
Technical characteristics:
· FTDI chip
· Baud rate 9600, 19200, 38400 and 115 kBaud
· Stop bits 1 or 2
· Parity: EVEN, NONE, UNEVEN
· -40 °C to 85 °C operating temperature range
· ESD protection
· +/- 15 kV Human Body Model (HBM) +/- 15 kV
EN61000-2-4 Air Gap Dis/- 8 kV
EN61000-2-4 Contact Discharge
· RoHS compliant