IBC control VariMax50 UL/CSA Manuale utente

IBC

control

MANUAL

CONTROL UNIT FOR ROTARY HEAT EXCHANGER

VariMax50

UL/CSA

Article no. F21050303

Since 1983Since 1983

Ska vara 25 mm i diameter på höjden

TABLE OF CONTENTS

Installation instructions 2

Mounting 2

Safety instructions 3

Manufacturer's declaration 4

Description of functions 5

Technical data, control unit 6

Technical data, motor 6

Functions 6

- DIP switch 7

- Operational indications 7

- Alarms 7

- Settings via potentiometer 8

- Push button 8

Connection diagram 9

Connections 9

Input signal/Rotation speed 10

Checks before powering up

the control unit 10

Commissioning the equipment 10

EMC installation 11

EMC gland 11

Own notes 12-13

Warning indication e control unit must 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 must only be performed by trained

personnel. Prescribed electrical protection must be implemented.

Disposal and recycling When replacing components or when the control unit in its

entirety needs replacing, please follow the advice below:

e aim shall always be to achieve the maximum possible

recycling of raw materials, with the minimum possible

environmental impact.

Never dispose of electrical components with ordinary waste;

always use the designated collection points.

Disposal should be eected as environment-friendly as the

technology allows in terms of environmental protection and

recycling.

INSTALLATION INSTRUCTIONS

MOUNTING

Mounting hole 5 ø

SAFETY INSTRUCTIONS

is safety instruction refers to instructions whose specic intent

is to avoid the risk of personal injury and to prevent damage to

equipment.

Lethal Danger! Electrical components are powered by electrical

current!

NB! Switch o main power before removing the cover.

Never touch electrical components or contacts while main

current is switched on. Risk of electrocution, resulting in serious

injury or death.

Connected terminals contain residual voltage even aer the main

current has been switched o.

e following symbols and references will be used in this description. ese

instructions are important; they apply to personal and technical safety during

operation.

MANUFACTURER'S DECLARATION

Manufacturer IBC control AB

Brännerigatan 5 A, SE-263 37 Höganäs, Sweden

Product Control unit for rotary heat exchanger

Type designation VariMax50 UL/CSA

EU Directive

applicable 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.

UL/CSA ETL 4009131.

All control units are also approved in accordance with UL 508C and CSA C22.2

No. 14.

Associated VariMax-motor50 is approved in accordance with UL 1004-1,

UL 1004-3 and CSA C22.2 No. 100.

is product also complies with RoHS Directive 2011/65/EU,

including Commission Delegated Directive EU 2015/863.

Höganäs 2019-05-10

IBC control AB

Christer Persson

-----------------------------------------------------------------------------------------

e FreeRTOS v6.1.0 (http://www.freertos.org) soware is used in this

product and this source code can be supplied by us.

• e VariMax50 UL/CSA is part of a range of control units adapted for optimum control

of rotary heat exchangers, with the necessary additional functions. e range consists of

three sizes: VariMax25 UL/CSA, VariMax50 UL/CSA and VariMax100 UL/CSA.

All control units run a 3-phase stepping motor.

All control units have an input signal of 0-10 V.

• e VariMax50 UL/CSA is designed for rotors up to 2500 mm with a rotor speed of max.

12 rpm. If the rotor requires a faster rotor speed, the rotor diameter should be reduced.

• e VariMax50 UL/CSA has built-in input signal shi, which means that the rotor's

eciency is proportional to the input signal.

• e VariMax50 UL/CSA has a preset threshold value of 0,1 V (hysteresis 0,13–0,07 V).

If the input signal falls below this value, the rotor will stop.

• e VariMax50 UL/CSA has a rotation monitor (magnet mounted on the rotor with

associated magnet sensor) and a built-in cleaning function.

e functions can be disconnected via DIP switches.

• e VariMax50 UL/CSA starts automatically aer voltage drop-out, and

resets all alarms on restart.

• e VariMax-motor50 is a stepper motor with substantial moment over the entire speed

range.

• When the motor is stationary, a holding torque is activated, which means that the rotor

always remains still.

e holding torque disappears if the voltage to the control unit is lost.

• e motor is mounted with a 3 m cable as standard.

DESCRIPTION OF FUNCTIONS

Output frequency 0-312 Hz

Acceleration and

retardation time

30 sec

Ambient temperature,

non condensing

-30 - +45 OC

-40 - +45 OC ***)

Protection form Type 1

Weight 1,2 kg

Dimensions, HxWxD 203x187x70 mm

External power supply 1x230-240 V +/-15 %

50/60 Hz

Power input, max. 240 W

Input current, max. 1,9 A

External fuse, max. 10 A

Output voltage*) 3x0-280 V

Motor current/phase 2 A

Internal fuse **) 2,5 AT *) Exact value cannot be obtained with a digital measuring

instrument

**) e fuse protects both motor and electronics

***) Note, e control unit must be connected to power all the time

TECHNICAL DATA, CONTROL UNIT

Max. moment 4 Nm

Min. rotation speed 1 rpm

Max. speed (rpm) 375 rpm

Motor temperature mantle max 110 OC

Sha diameter 14 mm

Sha length 40 mm

Ambient temperature -30 - +45 OC

-40 - +45 OC ***)

Protection form IP54

Weight incl. motor

bracket

4 kg

Measurements incl.

sha and motor bracket

HxWxL

130x130x171 mm

TECHNICAL DATA, MOTOR

Operational indications

Alarm indications

Reset button

DIP switch

ON to le

Settings

FUNCTIONS ***) Note, e control unit must be connected to power all the time

DIP SWITCH

Cleaning function Cleaning function connected in ON position. When the rotor has stopped

for 10 minutes, the cleaning function is activated and the rotor starts to

rotate. As a warning, the rotor rst rotates for 6 seconds at a motor speed

of 5 rpm, the rotor is then stationary for 3 seconds. Aer this, the actual

cleaning starts, for a random time, between 10 to 20 seconds with the

motor at 20 rpm.

Rotation monitor Rotation monitor connected in ON position.

High speed *) e rotor rotates at the set max. rpm when the switch is set to ON.

Low speed *) e rotor rotates at the preset min. speed (1 rpm) when the switch is set

to ON.

*) Manual operation (test mode)

OPERATIONAL INDICATIONS

On/Alarm "Voltage on" comes on with a xed light.

Flashes 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 sensor DIP switch setting.

Flashes even if the input signal is lower than the threshold value.

ALARMS

In the event of an alarm the control unit restarts aer 30 seconds. e respective red light diode comes

on for the same duration (30 seconds).

Aer restart the light diode goes out, this happens twice. e third time, the alarm relay closes and the

alarm "moves on".

In order for the alarm relay to close and the alarm to "move on", the above three alarm signals must

occur within 90 minutes, otherwise the sequence is reset.

A steady green LED is activated for the rst and second alarm and begins to ash on the third alarm.

All alarms subsequently remain active.

Rotation monitor Generates an alarm and trips if a pulse has not been received every 30

minutes at minimum speed (1 rpm) and every 20 seconds at maximum

speed (375 rpm).

e time between these speeds is linear.

e function can be disconnected via DIP switches.

Continued on next page

Continued from previous page

Probable fault cause

during installation

Probable fault cause in

operation

- Magnet turned the wrong way

- Magnet sensor incorrectly connected (wrong polarity),

refer to "connections" on page 9

- Gap too wide between the magnetic sensor and magnet; max 15 mm

- Broken belt

- Belt slipping

- Stuck rotor

- Magnetic sensor or magnet not intact

Motor temperature Alarms and trips if motor winding temperature is too high. e

temperature switch in the motor reverts to normal mode when the

temperature drops.

Overvoltage Alarms and trips if the input voltage exceeds 265 V.

Undervoltage Alarms and trips if the input voltage falls below 190 V.

Over /under-

temperature

Alarms and trips if the temperature in the control unit goes above/below

safe temperature level (+85 - -30 OC).

Short circuit

Probable cause

Alarms and trips in the event of short circuit phase-phase or phase-earth.

- Short circuit between phases in cable or motor

- Short circuit between phase-earth in cable or motor

- Interruption to one phase in cable or motor

Measure motor resistance; it should be identical on all coils.

Internal fault Alarms and trips if an internal fault in the control system has occurred.

SETTINGS VIA POTENTIOMETER

Manual speed By closing A1-A2 the speed is controlled via the potentiometer marked

"Manual speed". Can be regulated between 1 and 375 rpm.

e rotor rotates at the set speed, whatever the value of the input signal.

Factory setting: 1 rpm on motor sha.

Max speed Potentiometer for adjusting max. speed.

Regulates between 50 and 375 rpm.

Factory setting: 50 rpm on motor sha.

PUSH BUTTON

Reset Reset button for resetting the control unit. e control unit is also reset in

the event of voltage drop-out and closure between terminals 11 and 12.

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