ABB MREL-01 User manual

User’s Manual
Output Relay Module
MREL-01
ABB Drives

Output Relay Module
MREL-01
User’s Manual
3AUA0000035974 REV A EN
EFFECTIVE: 1.9.2008
©2008 ABB Oy. All Rights Reserved.

4
Safety
Safety
WARNING! All electrical installation and maintenance work on the drive
should be carried out by qualified electricians only.
WARNING! The drive and adjoining equipment must be properly
grounded.
WARNING! Do not attempt any work on a powered drive. After
switching off the mains, always allow the intermediate circuit capacitors
5 minutes to discharge before working on the drive, the motor or the
motor cable. It is good practice to check (with a voltage indicating
instrument) that the drive is in fact discharged before beginning work.
WARNING! The motor cable terminals of the drive are at a dangerously
high voltage when mains power is applied, regardless of motor
operation.
WARNING! There can be dangerous voltages inside the drive from
external control circuits even when the drive mains power is shut off.
Exercise appropriate care when working on the unit. Neglecting these
instructions can cause physical injury or death.
Use of Warnings and Notes
There are two types of safety instructions throughout this manual:
• Notes draw attention to a particular condition or fact, or give
information on a subject.
• Warnings caution you about conditions which can result in serious
injury or death and/or damage to the equipment. They also tell you
how to avoid the danger. The warning symbols are used as follows:
Dangerous voltage warning warns of high voltage which can cause
physical injury and/or damage to the equipment.

5
Table of Contents
Table of Contents
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Use of Warnings and Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Preparing for Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Installing the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

6
Installation
Installation
Preparing for Installation
The MREL-01 Module
The Relay Output Extension module (MREL) is an interface for
connecting three relay outputs to an ACS310 or ACS350 drive.
Module Layout
Compatibility
MREL-01 is mechanically compatible with all ACS310 and
ACS350 drives.
MREL-01 is supported by all ACS310 software versions and
ACS350 software and hardware versions from 258A.
Relay 3
Relay 4
Relay 2
Grounding stand-off
Panel port adapter

7
Installation
Installing the Module
Delivery Check
The option package contains:
• MREL-01 module
• Grounding stand-off
• Panel port adapter
• Warning stickers in several languages
• This manual
Mounting
WARNING! Follow the safety instructions given in this guide and
in the ACS310 or ACS350 User’s Manual.
To mount the MREL-01 module:
1. If not already off, remove mains power from the drive.
2. Remove the control panel or panel cover. (See instructions in the
drive User’s Manual.)
3. Remove the grounding screw in the top left corner of the drive’s
control panel slot and install the grounding stand-off in its place.
4. Ensure that the panel port adapter is attached to either the panel
port of the drive or the mate part of the MREL-01 module.
5. Gently and firmly install the MREL-01 module to the drive’s panel
slot directly from the front.
NOTE! Signal and power connections to the drive are
automatically made through a 6-pin connector.
6. Ground the module by inserting the screw removed from the drive
in the top left corner of the MREL-01 module. Tighten the screw.

8
Installation
NOTE! Correct insertion and tightening of the screw is essential
for fulfilling the EMC requirements and proper operation of the
module.
7. Install the control panel or panel cover on the MREL-01 module.
4
3
6
5

9
Installation
Wiring
• Use 0.5 to 1.5 mm2(20 to 16 AWG) cable with an appropriate
voltage rating for digital signals.
• Refer to “Terminal Designations” on page 9 and connect control
wires to the MREL-01 module.
Terminal Designations
Use the following table for reference when wiring terminals.
Apply Power
1. Turn on the mains power to the drive.
2. Continue to the next section, Start-Up.
Identification Hardware Description
1 COM OUTPUT RELAYS K2-K4:
• Max. continuous current:
2 A rms (cos ϕ = 1),
1 A rms (cos ϕ = 0.4)
• Max. switching capability:
6 A (24 V DC, resistive load)
1500 VA (250 V AC)
• Galvanically isolated from each other (2.5 kV AC,
1 min.)
2NC
3NO
1COM
2NC
3NO
1COM
2NC
3NO
K2
K3
K4

10
Start-Up
Start-Up
To configure the operation of the relays added using the MREL-01
module:
1. Power up the drive.
2. In ACS350, set the parameter 9801 EXTENSION SEL to 2
(MREL). See the User’s Manual of the drive for more information
on parameters.
3. Use the control panel on the drive and set the parameters for relay
outputs 2 to 4 in Group 14 – Relay Outputs. Refer to the User’s
Manual of the drive for parameter descriptions, and for instruction
on the control panel operation.

11
Technical Data
Technical Data
Dimensions
Module dimensions are shown in the figure below:
Enclosure Degree of Protection
IP20.
Ambient Conditions
The module is mounted outside the drive enclosure. Refer to the
drive’s requirements.
Connectors
Connectors on the module:

12
Technical Data
• 6-pin connector (connection to the MMIO board)
• Three 3-pin, screw-type, non-detachable terminal blocks that fit
wires up to 1.5 mm2(16 AWG).
Specifications
Module Specifications
• Estimated min. lifetime: > 200,000 cycles/relay, at maximum
continuous current operation.
• All materials are UL/CSA-approved.
• When used with an ABB drive, the module complies with EMC
standard EN/IEC 61800-3 (2004) for electromagnetic
compatibility and EN/IEC 61800-5-1 (2005) for safety
requirements.
Relay Outputs
The specifications for the module relay outputs are:
• Max. contact voltage: 30 V DC, 250 V AC
• Max. switching capability: 6 A (24 V DC, resistive load)
1500 VA (230 V AC)
• Max. continuous current: 2 A rms (cos ϕ= 1), 1 A rms (cos ϕ=
0.4)
• Minimum current: 10 mA, 12 V DC
• Contact material: Silver-nickel (AgN)
• Isolation between relay digital outputs, test voltage: 2.5 kV AC,
1 minute

ABB Oy
AC Drives
P.O. Box 184
FIN-00381 HELSINKI
FINLAND
Telephone [phone]
Telefax [phone]
Internet http://www.abb.com
3AUA0000035974 REV A / EN EFFECTIVE: 1.9.2008