Communications Connections; Control Connections - Emerson unidrive m200 User Manual

Safety Product Mechanical
information information installation
Figure 4-38 Surge suppression for analog and bipolar inputs and
outputs
Signal from plant
0V
Surge suppression devices are available as rail-mounting modules, e.g.
from Phoenix Contact:
Unipolar TT-UKK5-D/24 DC
Bipolar TT-UKK5-D/24 AC
These devices are not suitable for encoder signals or fast digital data
networks because the capacitance of the diodes adversely affects the
signal. Most encoders have galvanic isolation of the signal circuit from
the motor frame, in which case no precautions are required. For data
networks, follow the specific recommendations for the particular
network.
4.9

Communications connections

Installing an AI-485 Adaptor provides the drive with a 2 wire 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 4-39 Location of the AI-485 Adaptor option
1 2 3 4 5 6
4.9.1 485 serial communications
The drive only supports Modbus RTU protocol. See Table 4-24 for the
connection details.
NOTE
Standard Ethernet cables are not recommended for use when
connecting drives on a 485 network as they do not have the correct
twisted pairs for the pinout of the serial comms port.
Table 4-24 Serial communication port pin-outs (RJ45)
Pin
120 Ω Termination resistor
1
2 RX TX
3 0 V
4 +24 V (100 mA)
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.
Unidrive M200 / M201 User Guide
Issue Number: 4
Electrical Getting Basic Running the
installation started parameters
Signal to drive
2 x 15V zener diode
e.g. 2xBZW50-15
0V
8
Function
NV Media
Optimization
motor Card
Table 4-25 Serial communication port pin-outs (screw terminal
block)
Pin
1 0 V
2 RX\ TX\
3 RX TX
120 Ω Termination resistor
4
5 TX Enable
6 +24 V (100 mA)
4.9.2 Isolation of the 485 serial communications
port
The serial PC communications port is single insulated and meets the
requirements for ELV.
When using the communications port with a personal
computer or centralised controller e.g. PLC, an isolation
device must be included with a rated voltage at least equal
to the drive supply voltage. Ensure that the correct fuses are
WARNING
installed at the drive input, and that the drive is connected to
the correct supply voltage.
If a serial communications converter other than the CT
Comms cable is used to connect to other circuits classified
as Safety Extra Low Voltage (SELV) (e.g. to a personal
computer), then a safety isolating barrier must be included to
maintain the SELV classification.
An isolated serial communications lead has been designed to connect
the drive to IT equipment (such as laptop computers), and is available
from the supplier of the drive. See below for details:
Table 4-26 Isolated serial comms lead details
Part number
4500-0096
1
The "isolated serial communications" lead has reinforced insulation as
defined in IEC60950 for altitudes up to 3,000 m.
4.10

Control connections

4.10.1 General
Table 4-27 The control connections consist of:
Function
Single ended analog
input
Analog output
Digital input
Digital input / output
Relay
Drive enable
+10 V User output
+24 V User output
0V common
Key:
Destination parameter:
Source parameter:
Mode parameter:
All analog terminal functions can be programmed in menu 7.
Advanced
Technical data Diagnostics
parameters
Function
Description
CT USB Comms cable
Control parameters
Qty
available
Mode, offset, invert, scaling,
2
destination
1 Source, mode, scaling,
4 Destination, invert
Input / output mode select,
1
destination / source, invert
1 Source, invert
1
1
1
1
Indicates the parameter which is being controlled
by the terminal / function
Indicates the parameter being output by the
terminal
Analog - indicates the mode of operation of the
terminal, i.e. voltage 0-10 V, current 4-20 mA etc.
Digital - indicates the mode of operation of the
terminal, (the Drive Enable terminal is fixed in
positive logic).
UL Listing
Terminal
number
2, 5
7
11, 12, 13,
14
10
41, 42
11
4
9
1
69