Status Leds; Option Card Operability Loop Back Test - Danfoss VLT 5000 Instruction Manual

Status LEDs

The Modbus RTU option card has two LEDs.
One LED is used as a status for Modbus RTU
communications and the other as a status
for VLT 6000 drive communications. Both
LEDs use the same communications
patterns. On power up, each LED state is
flashed on for 250 milliseconds (Red, Green,
Orange, Off). The VLT 6000 LED powers up
Option Card A loop back test to confirm Modbus RTU
option card operability can be performed. The
Operability
option card must be removed from the
Loop Back
adjustable frequency drive to gain access to
Test
the 9-input dip switch for baud rate and parity
and to rewire the option card connectors.
• Remove the option card in accordance
• Set the dip switch positions in accordance
MG.10.P2.22 - VLT is a registered Danfoss trademark
Ensure that power has been
removed from adjustable fre-
quency drive for a minimum of
14 minutes to allow voltage to
dissipate.
with the procedures described in the
installation section of this manual.
with the table below.
SW1 SW2 SW3
ON ON
first, then the Modbus LED. After power up,
the following are the only valid states:
• Flashing Green (1 Hz): Communications
• Flashing Red (1 Hz): Communications
• Solid Red: Fault, communications halted
• Remove all wiring from both the 6-pin
• Wire the 6-pin option card connector to
6-Pin Connector
• Apply power to the unit.
After the normal status LED check at
power-up (see Status LEDs), the loop back
test sets both LEDs to orange for a successful
test or red if the test fails. The orange or red
indicator lasts around 10-15 seconds. The
LEDs will then flash red or green
communication indications.
SW4 SW5
ON OFF OFF
Loop Back Test Switch Positions
online (VLT 6000 LED) or receiving data
(Modbus LED)
time out
3-Pin EIA-485 Connector
Modbus LED
VLT 6000 LED
option card connector and the 3-pin
EIA-485 connector.
the 3-pin EIA-485 connector as described
below.
EIA-485 Connector
Pin 2 to Pin 3
Pin 3 to Pin 2
Pin 4 to Pin 1
SW6 SW7 SW8
ON ON ON
SW9
ON
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