IBC control MicroMax750 User manual

IBC
control
Made in Sweden
MANUAL
CONTROL UNIT FOR ROTATING HEAT EXCHANGER
MicroMax750
Article no. F21075401

Installation instructions 2
Mounting 2
Safety instructions 3
Manufacturer's declaration 4
Description of functions 5
Technical data 6
Functions 6
- DIP switch 7
- Operational indications 7
- Alarms 8-9
- Settings via potentiometer 9
- Push button 9
Connection diagram 10
Connections 10
Checks before powering up
the control unit 11
Putting the equipment into
operation 11
EMC installation 12
EMC gland 12
Personal notes 13
TABLE OF CONTENTS

Warning indication e control unit may only be used in perfect technical condition.
Any damage that may aect safety must be dealt with
immediately.
Maintenance/Repairs e function of the control unit should be checked regularly.
Troubleshooting and repairs may only be performed by trained
personnel.
Electrical safety regulations must be met.
Disposal and recycling When replacing components or when the control unit in its
entirety need replacing, please follow the advice below:
e aim should always be maximum possible recycling of raw
materials, with minimum possible environmental impact.
Never dispose of electrical components with ordinary waste,
always use the designated collection points.
Disposal should be as environment-friendly as the technology
allows in terms of environmental protection and recycling.
INSTALLATION INSTRUCTIONS
MOUNTING
Mounting hole 5 ø
Mounting hole 5 ø
2

SAFETY INSTRUCTIONS
Safety instruction refers to instructions whose specic intent is
to avoid the risk of personal injury and to prevent damage to
equipment.
Danger! Electrical current to electrical components!
Note: Switch o main power before removing the cover.
Never touch electrical components or contacts while main
current is switched on. Risk of electric shock, resulting in
serious injury or death.
Residual voltage remains in connected terminals even aer
main power has been switched o.
e following symbols and references are used in this
description. ese instructions are important; they apply to personal and technical
safety during operation.
23

4
MANUFACTURER'S DECLARATION
Manufacturer IBC control AB
Brännerigatan 5 A, SE-263 37 Höganäs, Sweden
Product Control unit for rotating heat exchanger
Type designation MicroMax750
Article number F21075401
EU directive
applied to the
product
e manufacturer's declaration of conformity with the requirements of the
EMC Directive 2004/108/EC.
All control units are approved according to the requirements of the
EMC Directive 2004/108/EC and are tested according to standard
EN 61800-3:2004, emission category C1 and immunity category C2.
All control units comply with the Low Voltage Directive 2006/95/EC,
standard EN 61800-5-1.
All control units are designed for installation in environments subject to
pollution degree 2.
is product also complies with RoHS Directive 2011/65/EU.
Höganäs 2015-07-01
IBC control AB
Christer Persson
MD

•e MicroMax750 is part of a range of control units adapted, with the necessary
additional functions, for optimum control of rotating heat exchangers.
e series consists of four sizes, MicroMax, MicroMax180, MicroMax370 and
MicroMax750.
All of the control units drive three-phase induction motors with associated gearing;
the control unit designation denotes motor output.
All control units have an input signal of 0-10 V.
•MicroMax750 is designed for wheels up to 5000 mm mm with a wheel speed of max
12 rpm. If a faster wheel speed is necessary, rotor diameter should be reduced.
•Heat exchanger rpm and thus thermal eciency are governed by the control unit so that
wheel speed is proportional to the input signal from the control centre.
•MicroMax750 has a preset threshold value of 0.1 V (hysteresis 0.13–0.07 V).
If the input signal falls below this value, the wheel will stop.
•MicroMax750 has a rotation monitor (magnet mounted on the wheel with associated
magnetic sensor) and built-in cleaning function.
e functions can be disconnected via DIP switches.
•MicroMax750 starts automatically following voltage drop-out, and resets all alarms on
restart.
•e motor should not be disconnected from the control unit while under load.
DESCRIPTION OF FUNCTIONS
45

Overload 2 min/30 min 5.3 A
Internal fuse **) 6.3 AT
Acceleration time
Retardation time
(Fixed) 30 sec
(Fixed) 60 sec
Ambient temperature,
non condensing
-20 - +45 OC
Protection form IP54
Weight 1.2 kg
Dimensions, HxWxD 225x165x60 mm
Connection voltage 1x230-240 V +/-15 %
50/60 Hz
Power input, max. 1100 W
Input current, max. 5.0 A
External fuse, max. 10 A
Output voltage*) 3x0-230 V
Min frequency (Fixed) 4 Hz
Max frequency 40-100/150 Hz
Motor output, max 750 W
Motor current 3.6 A
* Exact value cannot be obtained with a digital measuring
instrument
** e fuse protects both motor and electronics
Reset button
Alarm indications
Settings
TECHNICAL DATA
FUNCTIONS
4 1 2 35
DIP switch
Operational/
Alarm indications
6
DIP switch ON to le
Operational indications

DIP SWITCH
Max frequency
100/150 Hz
e default DIP switch setting is 100 Hz.
To increase speed, the DIP switched may in special cases be set to 150 Hz
is may however result in a shorter service life for the VVX motor.
Cleaning Cleaning function set to ON position.
When the wheel has stopped for 30 minutes, the cleaning function is
activated and the wheel rotates at minimum speed for 10 seconds.
Rotation monitor Rotation monitor set to ON position.
High speed* e wheel rotates at the set maximum rpm when the switch is set to ON.
Aer a test run, make sure the DIP switch is set to OFF.
Low speed* e wheel rotates at the xed minimum rpm when the switch is set to
ON.
Aer a test run, make sure the DIP switch is set to OFF.
*Manual operation (test mode)
OPERATIONAL INDICATIONS
On/alarm "Power on" is lit continuously.
It ashes when the control unit has tripped.
Run Comes on when the motor is to rotate, i.e. when the input signal exceeds
the threshold value.
Rotation Flashes when the magnet passes the magnetic sensor, regardless of the
“Rotation monitor” DIP switch setting.
Flashes even if the input signal is lower than the threshold value.
67

Rotation monitor
Probable fault cause on
installation
Probable fault cause in
operation
Alarms and trips unless a pulse is received every 5 minutes.
- Magnet facing the wrong way
- Magnetic sensor incorrectly connected (wrong polarity),
see CONNECTIONS on page 10
- Too wide a gap between the magnetic sensor and magnet; max 15 mm
-Broken belt
- Belt slipping
- Stuck wheel
- Magnetic sensor or magnet not intact
Motor temperature
Probable fault cause
Alarms and trips if motor winding temperature is too high.
e thermal contact in the motor reverts to normal mode when the
temperature drops.
See "Overcurrent" on page 9.
Overvoltage Alarms and trips if the connection voltage exceeds 276 V for more than
4-5 seconds.
Undervoltage Alarms and trips if the power supply falls below 195 V for more than
4-5 seconds.
Short circuit/overcurrent
Undervoltage and over-
voltage both light up
Probable fault cause
Alarms and trips in the event of a phase-to-phase or phase-to-earth short
circuit and overcurrent.
Phase-to-phase short circuit
MicroMax750 limits current to 7 A, above which it will trip aer
4-5 seconds.
- Motor winding fault
Measure motor resistance; it should be identical on all phases.
- Phase-to-phase short circuit in the cable
ALARMS
All alarms remain in state.
Continued on next page
8

Continued from previous page
Probable fault cause
Probable fault cause
Phase-to-earth short circuit
MicroMax750 trips immediately.
- Earth fault in motor or cable
In the event of an earth fault, the control unit must be reset with
power o.
Overcurrent
MicroMax750 limits current to 7 A, above which it will trip aer
4-5 seconds.
- e motor is too small in relation to rotor diameter
- Wheel rotation sluggish
- Damaged motor, e.g. bearing fault
Measure amperage.
NOTE! Precise voltages and amperages can only be obtained with a
moving-iron ammeter.
------------------------------------------------------------------------------------------------------
SETTINGS VIA POTENTIOMETER
Max speed Potentiometer for adjusting max. speed.
Adjust between 40-100 Hz.
Factory setting, 50 Hz.
PUSH BUTTON
Reset Reset button for resetting the control unit.
e control unit also resets in the event of voltage drop-out.
In both cases, all alarms reset.
------------------------------------------------------------------------------------------------------
89

CONNECTIONS
Switch o power before starting work on the equipment.
Recommended tightening torque on terminals 0.5 Nm; max tightening torque 0.8 Nm.
Connection voltage
(L-N-PE)
1x230-240 V +/-15 %, 50/60 Hz.
NOTE! Protective earth must always be connected.
Motor
(U-V-W)
ree-phase induction motor wired for 3x230 V (Delta).
Max 750 W.
Direction of rotation is changed by switching two of the phases.
ermal contact
(T-T)
e thermal contact in the motor should be used to protect the motor
from overheating.
Must be jumped if the temperature switch is not connected.
Alarm relay
(13-14-15)
Closes between 14-15 in the event of an alarm or voltage drop-out.
Max 8 A resistive load / 250 V AC.
Input signal
(2-3)
0-10 V.
Plus connected to terminal 2, minus to terminal 3.
Rotation monitor
(9-10)
White cable connected to terminal 9, brown to terminal 10.
e magnet is installed with south side (S) towards the transmitter.
Max. gap 15 mm.
Manual speed
(A1-A2)
Provides set max rpm when closed, regardless of input signal value.
CONNECTION DIAGRAM
10
Manual
speed
T T 2 3
+
Input
signal
0-10 V
9 10
Rotation
monitor
3~
L N U V W
M
1x 230 V 3x230 VThermal
contact
13 14 15
Alarm
relay
A1 A2
w
S
br
1 2 3 4 5
(Max 8 A/250 V AC)

10
Check that the control unit is connected as per instructions on page 10.
Connection voltage 230-240 V +/-15%, 50/60 Hz.
Check that the motor is wired for 3 x 230 V. If there is an operating switch between
the motor and the control unit, the motor thermal contact should be
connected via the auxiliary terminal in the operating switch.
Check that the input signal is 0-10 V.
Check that the cleaning function and rotation monitor DIP switch are set to ON.
Check that the frequency DIP switch is set to 100 Hz for normal wheel speed
(10-12 rpm).
PUTTING THE EQUIPMENT INTO OPERATION
Should be done in sequence.
Check that the motor rotates in the right direction in relation to the wheel's direction
of rotation. In the event of a fault, switch two phases to the motor.
Adjustment of max.
speed
Set the High Speed DIP switch to the ON position.
Adjust "Max. speed" so that the wheel rotates at 10-12 rpm
(or as per directions from wheel manufacturer).
Aer a test run, set the DIP switch to OFF.
Checking minimum
speed
Set the Low Speed DIP switch to ON.
Check that the wheel starts.
e minimum speed is preset.
Aer a test run, set the DIP switch to OFF.
Checking the cleaning
function
Switch o the voltage.
Make sure the “Cleaning” DIP switch is set to ON and the input signal is
disconnected. When power is switched on, the wheel will rotate at
minimum rpm for 10 seconds.
Checking the rotation
monitor
e yellow Rotation LED will ash when the magnet passes the magnetic
sensor, regardless of DIP switch position.
Finish by having the control unit drive the wheel at maximum and minimum
rotation speed and checking that the wheel speed is correct.
CHECKS BEFORE POWERING UP THE CONTROL UNIT
11

Magnetic sensor, LiYCY 2x0.34
Shielded
Input signal, LiYCY 2x0.34/0.5
Shielded
EMC INSTALLATION
EMC GLAND
Motor cable
Ölex Classic 110 CY, /7G0.75
Shielded
Incoming EKK 3G1.5
Not shielded
EMC glands must be used for shielded cables.
e above cables or equivalent must be used to comply with the EMC Directive.
NOTE!
When connecting the shield to the EMC gland, it is important to do so as shown above.
12

12
YOUR NOTES
13

IBC control AB
Brännerigatan 5 A
SE-263 37 Höganäs
Sweden
Tel. [phone]
Fax [phone]
www.ibccontrol.se
[email protected]
IBC
control
F21075901 Version 2.0 2015-07-01