Electrical Installation; Vdc Supply; Communication Connections - Nidec Unidrive M200 User Manual

Safety Product Mechanical
information information installation
4

Electrical installation

4.1

24 Vdc supply

The 24 Vdc supply connected to the +24 V supply terminals on the AI-
Backup adaptor provides the following functions:
• It can be used as a back-up power supply to keep the control circuits
of the drive powered up when the line power supply is removed. This
allows any fieldbus modules or serial communications to continue to
operate. If the line power supply is re-applied, then the normal
operation can carry on after the drive automatically re-initializes the
power board parameters.
• It can be used to clone or load parameters in order to pre-configure
drives when the line power supply is not available. The keypad can
be used to setup parameters if required. However, the drive will be in
the Under Voltage state unless the line power supply is enabled,
therefore diagnostics may not be possible. (Power down save
parameters are not saved when using the 24 V back-up power
supply input).
The working voltage range of the 24 V back-up power supply is as
follows:
0 V (connected internally to 0V common - Control
0 V
terminal 1)
+ 24 V + 24 V Backup supply input
Nominal operating voltage
Minimum continuous operating voltage
Maximum continuous operating voltage
Minimum start up voltage
Minimum power supply requirement at 24 V
Maximum power supply continuous current
Recommended fuse
Minimum and maximum voltage values include ripple and noise. Ripple
and noise values must not exceed 5 %.
Figure 4-1 Location of the 24 Vdc power supply connection on the
AI-Backup adaptor
NOTE
The 24 Vdc Backup supply can be used on all frame sizes.
Unidrive M200 / M201 Control User Guide
Issue Number: 2
Electrical Getting Basic
installation started parameters
24.0 Vdc
19.2 V
30.0 V
12.0 V
20 W
3 A
1 A, 50 Vdc
Running the NV Media
Optimization
motor Card
4.2

Communication connections

Installing an AI-485 Adaptor provides the drive with a 2 wire EIA 485
serial communications interface. This enables the drive set-up, operation
and monitoring to be carried out with a PC or controller as required.
Figure 4-2 Location of the AI-485 Adaptor option
1 2 3 4 5 6
4.2.1 EIA 485 serial communications
The drive only supports Modbus RTU protocol. See Table 4-1 for the
connection details.
NOTE
Standard Ethernet cables must not be used when connecting drives on
a EIA 485 network as they do not have the correct twisted pairs for the
pinout of the serial comms port.
Table 4-1 Serial communication port pin-outs (RJ45)
Pin
120  Termination resistor
1
2 RX TX
3 0 V
4 +24 V (100 mA) output
5 Not connected
6 TX enable
7 RX\ TX\
8 RX\ TX\ (if termination resistors are required, link to pin 1)
Minimum number of connections are 2, 3, 7 and shield.
Table 4-2 Serial communication port pin-outs (screw terminal
block)
Pin
1 0 V
2 RX\ TX\ (if termination resistor required, link to pin 4)
3 RX TX
120 Termination resistor
4
5 TX Enable
6 +24 V (100 mA) output
N
NOTE
The connections on the RJ45 connector and terminal block are in
parallel.
Onboard Advanced
Diagnostics
PLC parameters
8
Function
Function
UL Listing
1
19