ABB MRP31.0 User manual
—
MANUAL
MRP31.0 Modbus RTU
communication module
Universal Motor Controller UMC100.3
2UNIVERSAL MOTOR CONTROLLER UMC100.3 | MRP31.0 MODBUS TCP COMMUNICATION MODULE MANUAL
Description
The MRP31.0 device allows the connection of the Universal Motor Controller UMC100.3 to a Modbus RTU network.
Target group
This manual is intended for the use of specialists in electrical installation and control and automation engineering, who are
familiar with the applicable national standards.
Safety requirements
The responsible staff must ensure that the application or use of the products described satisfy all the requirements for
safety, including all the relevant laws, regulations, guidelines and standards.
Using this manual
Symbols
This manual contains symbols to point the reader to important information, potential risks and precautionary
information. The following symbols are used:
Sign to indicate a potentially dangerous situation that can cause damage to the
connected devices or the environment.
Sign to indicate important information and conditions.
Sign to indicate a potentially dangerous situation that can cause human injuries.
—
Terms and abbreviations
Universal Motor Controller
RTU
transmission mode
LED (Light Emitting Diodes)
Modbus TCP communication interface
—
Related documents
Technical documentation Document no.
—
Document history
Initial release
Revision A
New template
—
Important notice
—
Overview
RS485 Standard
(data low).
Ground wire and cable shield should be connected to prevent common mode voltage between the network devices from
prevent signal reflection.
The MRP31.0 Modbus Interface
The MRP31.0 Modbus communication interface is an optional device for the UMC100.3 which enables the connection of the
•
Parity and frame length are automatically detected
• MRP31.0 supports the RTU transmission mode only
•
time.
Through the interface you can:
•
• Read status information and actual process values from the UMC100.3
• Read device diagnosis information
MRP31
X3:
Modbus
connection
Status Indication
LEDs
X3: Modbus connection
X1: Communication
to UMC100.3
supply connection
Top View Side View
4UNIVERSAL MOTOR CONTROLLER UMC100.3 | MRP31.0 MODBUS TCP COMMUNICATION MODULE MANUAL
—
Installation
Mechanical installation
The Modbus interface module MRP31.0 can be mounted either on the UMC100.3 itself or separately from the UMC100.3 using
the single mounting kit (SMK3.0).
Mounting the MRP31.0 on the UMC100.3
When the module is installed directly on the UMC100.3 the UMC100.3 with MRP31.0 acts like a device with integrated
Modbus RTU communication. No additional accessories are needed.
Power
MRP31 Move down MRP31 until
on UMC100.3
Mounting the MRP31.0 remote from the UMC100.3
—
01 Image shows UMC100.3 DC.
5UNIVERSAL MOTOR CONTROLLER UMC100.3 | MRP31.0 MODBUS TCP COMMUNICATION MODULE MANUAL
Mounting and dismounting
Mounting Dismounting
—
Mounting the MRP31.0 on the single mounting kit
Step 1:
Plug in the communication and
power supply connectors.
Step 3:
Move down the MRP31.0 until
snapped in
Step 2:
Move down the MRP31.0
Snap-in
Snapped
Move down
Step 4:
6UNIVERSAL MOTOR CONTROLLER UMC100.3 | MRP31.0 MODBUS TCP COMMUNICATION MODULE MANUAL
MRP31
Demounting the MRP31.0
screw driver and move the
MRP31.0 upwards to loosen
7UNIVERSAL MOTOR CONTROLLER UMC100.3 | MRP31.0 MODBUS TCP COMMUNICATION MODULE MANUAL
Electrical installation
Modbus Connection
Connect Modbus to X3.
General
Arrange the communication cables as far away from the motor cables as possible. Avoid parallel runs. Use bushings at cable
entries.
—
Connector X3
PIN Description
GND. Isolated signal ground
Data A (inverting)
Bus termination
equipped with internal bus termination
devices located at bus ends.
Communication settings
communication / Modbus RTU) and are copied then automatically to the MRP31.0. After changing communication settings
perform a power cycle.
Master supervision
busfault reaction.
Modbus bus timeout
Default 0 ms (deactivated)
Supported baudrates
Modbus data frame
•
•
•
•
Slave address
bus address.
8UNIVERSAL MOTOR CONTROLLER UMC100.3 | MRP31.0 MODBUS TCP COMMUNICATION MODULE MANUAL
Number of nodes in a Modbus network
Network length
bus stub lines should be avoided. To bridge long distances between the Modbus master and the slaves (e.g. between the
control room and the motor control center) it is recommended to use fiber optic converters.
Modbus TCP
Modbus line with MRP31.0 directly connected to UMC100.3 in a drawout system
The following figure shows a simplified diagram on how to connect the UMC100.3 to a Modbus network. Required grounding
of the Modbus cable is not shown in this figure.
Ground wire and cable shield should be connected to prevent common mode voltage between the network
devices from drifting outside the allowable limits.
LT
UMC100.3 and MRP31.0
mounted in drawer
Termination active
Termination active
Network
Length
Modbus Cable
Modbus Cable
9UNIVERSAL MOTOR CONTROLLER UMC100.3 | MRP31.0 MODBUS TCP COMMUNICATION MODULE MANUAL
Modbus line with MRP31.0 mounted outside a drawer using single mounting kit (SMK3.0)
The following figure shows a simplified diagram on how to connect the UMC100.3 to a Modbus network if the UMC100.3 is
inside a drawer and the Modbus communication interface is mounted outside the drawer e.g. in the cable compartment. In
drawout systems this solution has several benefits:
• Modbus address is stored in the Modbus communication interface in addition to the UMC100.3. In case of a drawer re
• Swapping of drawers detected if "Address Check" in UMC100.3 enabled. I.e. it is not possible to accidentally start the
wrong motor because of swapped drawer.
Required grounding of the Modbus cable is not shown in this figure.
LT55
X1
(2b)
(1)
(3)
(4)
max. 3m
(2a)
Network
Length
Termination active
(1) 24V DC supply for the
MRP31.0 communication
interface. This lets the
MRP31.0 stay active even
in case the drawer is
withdrawn.
(2a) Ready made
connection cable from
SMK3.0 X1 to backside of
drawer.
(2b) Ready made
connection cable from
inside drawer to
UMC100.3 X1
(3) UMC100.3
mounted inside a drawer
(4) Modbus
communication adapter
with single mounting kit
(SMK3.0).
Termination active
Modbus Cable
10 UNIVERSAL MOTOR CONTROLLER UMC100.3 | MRP31.0 MODBUS TCP COMMUNICATION MODULE MANUAL
Diagnosis and behavior in case of an error
The MRP31.0 module provides diagnosis information about the status of the connected UMC100.3, its own status and the
status of the Modbus connection. Diagnosis information is shown
with the locally available LEDs and
via Modbus services.
Checklist
In case of trouble use the following checklist to track down the problem:
RS485
• Are the termination resistors placed at the end of the line?
• Never place any termination resistors on a drop cable.
• Is the line polarity correct? Are the lines by accident swapped?
•
MODBUS parameters
• Is the baud rate correctly adjusted?
•
• Is the slave address correct?
• Are there two devices with the same address in the system?
MODBUS master
• Is the request to response timeout correct?
•
• Notice that the slave device will not give any response when it is addressed with a broadcast (slave address = 0)
MODBUS slave
•
• Same baud rate set as used in the master?
• Is the function code supported?
• Has the request a valid quantity of coils, inputs, registers?
• Power supply turned on?
—
Diagnosis
11 UNIVERSAL MOTOR CONTROLLER UMC100.3 | MRP31.0 MODBUS TCP COMMUNICATION MODULE MANUAL
Modbus interface diagnosis
Diagnosis information is locally displayed using LEDs located on the front side of the Modbus interface.
LED Bus (red, green) LED DD (red, green) Meaning
Power Supply missing
Green flashing
master
Red flashing Parameter mismatch between device and master
Red
Green
Amber flashing Amber flashing
Green flashing Waiting for communication from UMC
Green
Red flashing Connection to UMC lost
Red Internal fault. Replace communication interface.
Modbus exception codes
Code Name Meaning
The function code received in the request is not an allowable action for the slave. It could also indicate
configured
ILLEGAL DATA ADDRESS The data address received in the request is not an allowable address for the slave.
A value contained in the request data field is not an allowable value for slave. This indicates a fault in
An unrecoverable error occurred while the slave was attempting to perform the requested action.
12 UNIVERSAL MOTOR CONTROLLER UMC100.3 | MRP31.0 MODBUS TCP COMMUNICATION MODULE MANUAL
Modbus communication and Register Map for UMC100.3
Devices on a Modbus network offer their data in registers to a Modbus master. There is the possibility to read or write single
bits (coils) or whole words (registers).
The following Modbus requests are supported:
Commands MODBUS Function Codes Starting address
Read binary input values
Write binary output values
Read analog input values
Write analog output values
Read diagnostic data
Return query data n.a.
The following table shows in which registers the UMC100.3 data and diagnosis can be accessed:
—
Analog inputs of UMC100.3 acc. to the UMC100.3 manual section
A1 parameters and data structures on a Fieldbus
Register Data
Motor Current in % of Ie
Analog Word (Time to trip in seconds)
Analog Word (Time to restart in seconds)
Analog Word (Active power in selected scale)
Run Time
Position
Torque Closed End Pos
Closed
U Imbal. warn U Imbal. trip Undervoltage
warn
Undervoltage
trip
Underpower
warn
Underpower
trip
warn
trip
Earth fault
warning
Earth fault
trip
Cooling time
running
THD warning No start
possible
start left
—
Analog outputs of UMC100.3 acc. to the UMC100.3 manual section
A1 parameters and data structures on a Fieldbus
Register Data
Analog Word
Analog Word
Analog Word
Analog Word
The function of some bits can differ in case the control functions Actuator 1...4, Overload Relay or Transparent are configured. Please refer to the UMC100.3 manual in this case.
13 UNIVERSAL MOTOR CONTROLLER UMC100.3 | MRP31.0 MODBUS TCP COMMUNICATION MODULE MANUAL
—
Access to the monitoring data of UMC100.3 acc. to the UMC100.3 manual section
A1 parameters and data structures on a Fieldbus
Register Bit 7
Bit 15
Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit1 Bit 0
Bit 8
Summary
Warning
Summary
Local Control Reverse
Lockout
warning
Run
Reverse /
Closing
Run
—
Access to the command data of UMC100.3 acc. to the UMC100.3 manual section
A1 parameters and data structures on a Fieldbus
Register Bit 7
Bit 15
Bit 23
Bit 31
Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit1 Bit 0
Bit 8
Bit 16
Bit 24
Auto Mode Prepare
Emergency
Start
Run
Run
Reverse /
Closing
Run
—
Word oriented access to diagnosis data of UMC100.3 acc. to the UMC100.3 manual section
A1 Parameters and Data Structures on a Fieldbus
Register Bit 7
Bit 15
Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit1 Bit 0
Bit 8
Checkback
missing
PTC wiring
failure
PTC hot
thermal
model
Locked rotor
during
(stall)
Phase
imbalance
Phase
loss
Thermal
overload trip
Actuator
problem
UMC
Earth fault
Earth fault
trip (internal
triggered)
I
above high
current
warning
threshold
I
above high
current trip
threshold
I
below low
current
warning
threshold
I
below low
current trip
threshold
Trip/Warning
from
function
block
Trip/Warning
from
function
Trip/Warning
from
function
Trip/Warning
from
function
Trip/Warning
from
function
HW fault on
Custom
application
error
missing
Trip triggered
from
Multifunction
Trip triggered
from
Multifunction
Trip triggered
from
Multifunction
Trip / Warning
function
THD Warning
spec
power
Underload
power
Cooling Time
Running
Just one start
left
Num Starts
diagnosis is
available.
Parameter
out of range
The function of some bits can differ in case the control functions Actuator 1...4, Overload Relay or Transparent are configured.Please refer to the UMC100.3 manual in this case.
14 UNIVERSAL MOTOR CONTROLLER UMC100.3 | MRP31.0 MODBUS TCP COMMUNICATION MODULE MANUAL
Data at Ta= 25 °C and rated values, unless otherwise indicated
—
General data
Supply voltage
Current consumption
Supported Communication Protocols Modbus RTU
Physical Interface
Integrated termination resistors no
Supported baudrates
Pollution degree
—
Standards / directives
Product standard Modbus Specification
RoHS directive
—
Environmental data
Ambient air temperature
Storage
—
General data
Degree of protection
Mounting
Mounting position Any
Altitude
Duty time
Weight
—
Technical data
15 UNIVERSAL MOTOR CONTROLLER UMC100.3 | MRP31.0 MODBUS TCP COMMUNICATION MODULE MANUAL
SMK3.0
MRP31 / DNP31
22.5
89
64
99.7
0.886"
3.504"
2.520"
3.925"
1 2 5 4 3 2 1
1
2
3
4
5
1
2
3
4
5
6
X1
X1
X1
Connection cables
Pin Color
Communication
Grey Communication
White Diagnosis
Colors must match
Pin
Drawer
to UMC100.3
—
Dimensional drawings
Main device
16 UNIVERSAL MOTOR CONTROLLER UMC100.3 | MRP31.0 MODBUS TCP COMMUNICATION MODULE MANUAL
—
Ordering data
Order code Type Description
Modbus RTU communication interface
Single mounting kit for separate mounting of the communication interface
* is delivered including terminal block for power supply connection
** ready cables with terminal block on one end and one open end
17 UNIVERSAL MOTOR CONTROLLER UMC100.3 | MRP31.0 MODBUS TCP COMMUNICATION MODULE MANUAL
Document number 2CDC194005D0201 Rev. B (09/2019)
© Copyright 2019 ABB. All rights reserved.
Specifications subject to change without notice.
—
ABB STOTZ-KONTAKT GmbH
Eppelheimer Straße 82
69123 Heidelberg
Germany
Additional information
We reserve the right to make technical
changes or modify the contents of this
document without prior notice. With
regard to purchase orders, the agreed
particulars will take precedence.
ABB AG does not accept any
responsibility whatsoever for potential
errors or possible lack of information in
this document.
We reserve all rights in this document
and in the subject matter and
illustrations contained therein. Any
reproduction, disclosure to third parties
or utilization of its contents – in whole
or in parts – is forbidden without prior
written consent of ABB AG.
You can find the address of your local sales organization
on the ABB homepage
abb.com/lowvoltage
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