ABB REM 610 Product manual

REM 610
Motor Protection Relay
Technical Reference Manual - ANSI Version

3
REM 610
1MRS 755537
Issued: March 31, 2005
Version: A
We reserve the right to change data without prior notice.
Motor Protection Relay
Technical Reference Manual - ANSI Version
Contents
1. Introduction ...............................................................................6
1.1. About this manual .........................................................................6
1.2. The use of the relay ......................................................................6
1.3. Features ........................................................................................6
1.4. Guarantee .....................................................................................8
1.5. Revision history .............................................................................8
2. Safety information..................................................................... 9
3. Instructions ..............................................................................10
3.1. Application ...................................................................................10
3.2. Requirements ..............................................................................10
3.3. Configuration ...............................................................................10
4. Technical description .............................................................14
4.1. Functional description .................................................................14
4.1.1. Product functions .............................................................14
4.1.1.1. Schema of product functions ..............................14
4.1.1.2. Protection functions ............................................14
4.1.1.3. Inputs .................................................................15
4.1.1.4. Outputs ...............................................................15
4.1.1.5. Emergency start .................................................15
4.1.1.6. Restart disable ...................................................15
4.1.1.7. Motor start up .....................................................16
4.1.1.8. Rated current of the protected unit .....................16
4.1.1.9. Disturbance recorder ..........................................17
4.1.1.10.HMI ....................................................................17
4.1.1.11.Non-volatile memory ..........................................17
4.1.1.12.Self-supervision .................................................17
4.1.2. Measurements .................................................................19
4.1.3. Configuration ....................................................................20
4.1.4. Protection .........................................................................22
4.1.4.1. Block diagram ....................................................22
4.1.4.2. Thermal overload protection ..............................22
4.1.4.3. Start-up supervision ...........................................29
4.1.4.4. Short-circuit protection .......................................30
4.1.4.5. Undercurrent protection .....................................31
4.1.4.6. Ground-fault protection ......................................31
4.1.4.7. Unbalance protection .........................................32

4
1MRS 755537
Motor Protection Relay
Technical Reference Manual
REM 610
4.1.4.8. Phase reversal protection .................................. 33
4.1.4.9. Cumulative start-up time counter .......................34
4.1.4.10.Circuit-breaker failure protection ........................ 34
4.1.4.11.Temperature protection (optional) .....................35
4.1.4.12.Temperature protection using thermistors .........36
4.1.4.13.Settings .............................................................. 40
4.1.4.14.Technical data on protection functions ...........51
4.1.5. Trip-circuit supervision ..................................................... 54
4.1.6. Target LEDs and operation target messages ..................56
4.1.7. Motor running time counter ..............................................56
4.1.8. Monitoring of demand values ..........................................57
4.1.9. Commissioning tests ........................................................57
4.1.10.Disturbance recorder .......................................................57
4.1.10.1.Function ............................................................. 57
4.1.10.2.Disturbance recorder data ................................. 58
4.1.10.3.Control and target of disturbance
recorder status ................................................... 59
4.1.10.4.Triggering ..........................................................59
4.1.10.5.Settings and unloading ......................................59
4.1.10.6.Event code of the disturbance recorder .............59
4.1.11.Recorded data of the last events ..................................... 60
4.1.12.Communication ports ....................................................... 62
4.1.13.IEC 60870-5-103 remote communication protocol ..........63
4.1.14.Modbus remote communication protocol ......................... 66
4.1.14.1.Protocol overview .............................................. 66
4.1.14.2.Profile of Modbus REM 610............................... 67
4.1.14.3.SPA bus communication protocol parameters ...79
4.1.14.4.Event codes .......................................................93
4.1.15.Self-supervision (IRF) system ..........................................97
4.1.15.1.Self-supervision of the RTD module .................. 98
4.1.16.Relay parameterization ....................................................99
4.2. Design description ......................................................................99
4.2.1. Input/output connections .................................................99
4.2.2. Serial communication connections ................................ 104
4.2.3. Technical data ............................................................... 108
5. Setting calculations and application examples ................. 113
5.1. Setting calculations ...................................................................113
5.1.1. FLA secondary scaling factor ........................................113
5.1.2. Thermal overload protection ..........................................113
5.1.2.1. Selecting weighting factor p ............................. 114
5.1.2.2. Safe stall time for hot starts ............................. 116

1MRS 755537 Motor protection Relay
Technical Reference Manual
REM 610
5
5.1.2.3. Checking the set safe stall time for cold starts .119
5.1.2.4. Checking the set safe stall time for a
single start ........................................................120
5.1.2.5. Restart disable level, 49 RESTDIS ..................120
5.1.2.6. Prior alarm level, 49 ALARM ............................120
5.1.2.7. Time constant multiplier, Kc ................................. 120
5.1.3. Start-up supervision .......................................................120
5.1.3.1. Start-up supervision based on thermal stress
calculation ........................................................120
5.1.3.2. Checking the need for speed switch ................121
5.1.4. Cumulative start-up time counter ...................................121
5.1.5. Short-circuit protection ...................................................122
5.1.6. Unbalance and phase reversal protection .....................122
5.1.6.1. Selecting the pickup value for element 46 .......122
5.1.6.2. Selecting the time constant, 46 TDIAL .............122
5.1.6.3. Connection with two phase
current transformers .........................................123
5.1.7. Ground-fault protection ...................................................123
5.1.7.1. Stabilizing virtual ground-fault currents ............124
5.1.7.2. Increasing the sensitivity of the ground-fault
protection .........................................................124
5.1.8. Circuit-breaker failure protection ....................................124
5.1.9. Temperature protection (optional) ..................................124
5.2. Application examples ................................................................125
5.2.1. Protecting a circuit-breaker controlled motor .................125
5.2.2. Protecting a motor at an ambient temperature other than
40°C ...............................................................................126
5.2.3. Protecting a contactor controlled motor .........................127
5.2.4. Protecting non-rotating objects ......................................128
5.2.5. Ground-fault protection in an isolated or a compensated
network ..........................................................................128
5.2.6. Ground-fault protection in a solidly grounded network ...128
6. Ordering information ............................................................130
7. Revision history of REM 610 ................................................132
7.1. Revision identification ...............................................................132
7.2. Changes and additions to the earlier released revision A .........132
8. References .............................................................................133
9. Abbreviations ........................................................................134
10.Check lists ..........................................................................136

6
1MRS 755537
Motor Protection Relay
Technical Reference Manual
REM 610
1. Introduction
1.1. About this manual
This manual provides thorough information on the protection relay REM 610
Revision B and its applications, focusing on giving a technical description of the
relay. For more information about earlier revisions, refer to section Revision history.
Refer to the Operator’s Manual for instructions on how to use the
Human-Machine Interface (HMI) of the relay, also known as the Man-Machine
Interface (MMI), and to the Installation Manual for installation of the relay.
1.2. The use of the relay
REM 610 is a versatile multifunction protection relay mainly designed to protect
motors in a wide range of motor applications.
REM 610 is based on a microprocessor environment. A self-supervision system
continuously monitors the operation of the relay.
The HMI includes a Liquid Crystal Display (LCD) which makes the local use of the
relay safe and easy.
Local control of the relay via serial communication can be carried out with a
computer connected to the front communication port. Remote control can be carried
out via the rear connector connected to the control and monitoring system through
the serial communication bus.
1.3. Features
• Three-phase thermal overload protection
• Three-phase motor start-up supervision based on thermal stress calculation with
speed switch blocking ability
• Three-phase overcurrent protection with definite-time characteristic and speed
switch blocking ability
• Three-phase short-circuit protection with instantaneous or definite-time
characteristic
• Three-phase undercurrent (loss of load) protection with definite-time
characteristic
• Non-directional ground-fault protection with definite-time characteristic
• Three-phase unbalance protection based on the negative-phase-sequence current
with inverse definite minimum time characteristic
• Phase reversal protection based on the negative-phase-sequence current
• Cumulative start-up time counter with restart disable function
• Circuit-breaker failure protection
• Temperature protection elements with definite-time characteristic
• Emergency start function
• Optional RTD module
• with six measuring inputs
• supports PTC thermistors and various RTD sensors

1MRS 755537 Motor protection Relay
Technical Reference Manual
REM 610
7
• three additional galvanically isolated digital inputs
• Disturbance recorder
• recording time up to 80 seconds
• triggering by one or several internal or digital input signals
• records four analogue channels and up to eight user-selectable digital channels
• adjustable sampling rate
• Non-volatile memory for
• up to 100 event codes with time stamp
• setting values
• disturbance recorder data
• recorded data of the five last events with time stamp
• number of pickups for protection elements
• operation target messages and LEDs showing the status at the moment of
power failure
• Battery back-up for real-time clock
• Battery charge supervision
• Four accurate current inputs
• Two galvanically isolated digital inputs and three additional digital inputs on the
optional RTD module
• Time synchronization via a digital input
• All settings can be modified with a PC
• HMI with an alphanumeric LCD and manoeuvring buttons
• eight programmable LEDs
• Detachable plug-in unit
• Three normally open power output contacts
• Trip-circuit supervision
• Two change-over signal output contacts
• Output contact functions freely configurable for desired operation
• Optical front communication connection: wirelessly or via cable
• Optional rear communication module with plastic fibre-optic, combined fibre-
optic (plastic and glass) or RS-485 connection for system communication using
the SPA-bus, IEC 60870-5-103 or Modbus (RTU and ASCII) communication
protocol
• Continuous self-supervision of electronics and software. At an internal relay
fault, all protection elements and outputs will be blocked.
• User-selectable rated frequency 50/60 Hz
• User-selectable password protection for the HMI
• Display of primary current values
• Demand values
• Multi-language support

8
1MRS 755537
Motor Protection Relay
Technical Reference Manual
REM 610
1.4. Guarantee
Please inquire about the terms of guarantee of your nearest ABB representative.
1.5. Revision history
Version Date Remarks
AApril 11, 2005 Modified for ANSI compliance from the original manual
version 1MRS752263-MUM version B

1MRS 755537 Motor protection Relay
Technical Reference Manual
REM 610
9
2. Safety information
Dangerous voltages can occur on the connectors, even though the
auxiliary voltage has been disconnected.
National and local electrical safety regulations must always be
followed.
The device contains components which are sensitive to electrostatic
discharge. Unnecessary touching of electronic components must
therefore be avoided.
The frame of the device has to be carefully grounded.
Only a competent electrician is allowed to carry out the electrical
installation.
Non-observance can result in death, personal injury or substantial
property damage.
Breaking the sealing tape on the upper handle of the device will result
in loss of warranty and proper operation will no longer be guaranteed.
When the plug-in unit has been detached from the case, do not touch
the inside of the case. The relay case internals may contain high voltage
potential and touching these may cause personal injury.
!

10
1MRS 755537
Motor Protection Relay
Technical Reference Manual
REM 610
3. Instructions
3.1. Application
REM 610 is a versatile multifunction protection relay mainly designed for protection
of standard medium and large MV asynchronous motors in a wide range of motor
applications. It handles fault conditions during motor start up, normal run, idling,
and cooling down at standstill, e.g. in pump, fan, mill or crusher applications.
The large number of integrated protection functions makes REM 610 a complete
protection against motor damage. The relay can be used with both circuit-breaker
controlled and contactor controlled drives.
REM 610 can equally well be used to protect, for instance, feeder cables and power
transformers which require thermal overload protection and, for instance, single-,
two- or three-phase overcurrent or non-directional ground-fault protection.
3.2. Requirements
To secure correct and safe operation of the relay, preventive maintenance is
recommended to be performed every five years when REM 610 is operating under
the specified conditions; see below and section Technical data.
When being used for real-time clock or recorded data functions, the battery should
be changed every five years.
Environmental conditions
3.3. Configuration
Setting and connection examples
The appropriate configuration of the output contact matrix enables the use of the
signals from the protection elements as contact functions. The pickup signals can be
used for blocking co-operating protection relays and signalling.
Figures Fig. 3.3.-1 and Fig. 3.3.-2 represent REM 610 with the default
configuration: all trip signals are routed to trip the circuit breaker. In Fig. 3.3.-1 the
residual current is measured via a core-balance current transformer and in
Fig. 3.3.-2 via a summation connection of the phase current transformers.
Fig. 3.3.-3 represents REM610 connected to a contactor controlled motor with the
trips routed to trip the contactor.
• Recommended temperature range (continuous) -10...+55°C
• Limit temperature range (short-term) -40...+70°C
• Temperature influence on the operation accuracy of the
protection relay within the specified service temperature range
0.1%/°C
• Transport and storage temperature range -40...+85°C