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Cleaning function and 
rotation monitor

The function will start in the manually selected position on the control 
unit's DIP switch (refer to picture on page 18), but it is possible to change 
this via Modbus. When the Modbus communication is activated the 
manual settings give the settings for cleaning function and rotation 
monitor a start value, but Modbus has priority. 

High speed/Low speed

High speed/Low speed are not controlled via Modbus. 
Refer also to "High speed/Low speed" on page 7.

Manual speed 
A1-A2

A1-A2 has priority over Modbus. Manual speed can be read and 
activated via Modbus if A1-A2 are not connected. Refer also to  
"Manual Speed" on page 8.

Max speed

Max speed is set via the potentiometer. The DUC is configured so that 
100 % of the reference value equates to the set rpm speed. Refer also to 
"Max Speed" on page 8.

Resetting

Resetting can be made via Modbus, via the Reset button or via Remote 
Reset. Refer also to "Resetting" on page 8 and "Remote Reset" on page 9.

Input signal

This is controlled via Modbus.

Rotor speed

The rotor speed can be read via Modbus.

Activation of Modbus communication and configuration of address, data transfer rate, parity and 
termination are achieved through a 9-pole DIP switch. On delivery of the unit all DIP switches are set to 
their OFF position. For setting and configuration of the DIP switches refer to the table on page 18.

Modbus communication is activated through DIP switches. A constant red LED starts to light straight 
away if no message with the speed reference value has been received. This goes out once the message 
with the speed reference value has been received. A green LED starts flashing if there is data traffic 
present in the bus.

Settings made via Modbus are not saved in VariMax50M. When VariMax50M is restarted the setting 
from the DUC has to be re-transmitted.

16

FUNCTION SETTINGS, MODBUS

Summary of Contents for VariMax50M

Page 1: ...IBCcontrol MANUAL CONTROL UNIT FOR ROTATING HEAT EXCHANGER WITH MODBUS VariMax50M UL CSA Article no F21050304 M ade in S w ed en Since 1983 Since 1983 Ska vara 25 mm i diameter p h jden...

Page 2: ......

Page 3: ...ush 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 Modbus 13 T...

Page 4: ...sal and recycling When replacing components or when the control unit in its entirety needs replacing please follow the advice below The aim shall always be to achieve the maximum possible recycling of...

Page 5: ...h off 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 terminal...

Page 6: ...nity 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...

Page 7: ...ut signal shift which means that the rotor s efficiency is proportional to the input signal The VariMax50M has a preset threshold value of 0 1 V hysteresis 0 13 0 07 V If the input signal falls below...

Page 8: ...g instrument The fuse protects both motor and electronics Note The 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 R...

Page 9: ...eds 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 va...

Page 10: ...level 85 30 O C 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...

Page 11: ...to terminal 10 The magnet is installed with south side S towards the transmitter Max gap 15 mm 12 V output 3 11 Output for 12 V DC Terminal connection 3 is minus terminal connection 11 is plus Max 50...

Page 12: ...sition Adjust Max rpm so that the rotor rotates at 10 12 rpm or as per rotor manufacturer s directions Checking minimum speed Set the Low Speed DIP switch to ON Check that the rotor starts The minimum...

Page 13: ...HAR UL CSA 7G0 75 Shielded Input signal LiYCY 2x0 34 0 5 UL recognized Shielded EMC glands must be used for shielded cables The above cables or equivalent must be used to comply with the EMC Directive...

Page 14: ...12...

Page 15: ...13 M o d b u s...

Page 16: ...14...

Page 17: ...y 8 databits 1 stop bit no parity 8 databits 2 stop bits no parity 8 databits 1 stop bit odd parity Address 8 unique addresses refer to the table Addressing page 18 Termination Optional embedded termi...

Page 18: ...Resetting Resetting can be made via Modbus via the Reset button or via Remote Reset Refer also to Resetting on page 8 and Remote Reset on page 9 Input signal This is controlled via Modbus Rotor speed...

Page 19: ...ommunication established no traffic on the bus Lit with fixed light Flashing Communication established temporary communication error Poorly connected cable Incorrect termination Flashing Unlit Communi...

Page 20: ...0 0 11 17 1 0 0 1E 30 0 1 1 28 40 0 1 0 29 41 1 1 0 90 144 0 0 1 91 145 1 0 1 A9 169 1 1 1 Rate 9 600 0 0 19 200 1 0 38 400 0 1 56 000 1 1 Package 1 stop bit even parity 0 0 1 stop bit no parity 0 1...

Page 21: ...n Write 1 to activate the rotation monitor or 0 to deactivate Single bit Read Write 4 Manual speed Reads 1 if the manual speed is active Write 1 to activate manual speed instead of the control signal...

Page 22: ...e in the control unit Single bi Read 5 Overheating AC Overheating in the control unit Single bit Read 6 Under voltage AC Low supply voltage Single bit Read 7 Voltage surge AC High supply voltage Singl...

Page 23: ...Single bit Read 20 Short circuit Phase 3 missing Single bit Read 21 Short circuit Motor impedance low Incorrect motor impedance e g incorrect size of motor failed motor or bad connections Single bit R...

Page 24: ...ly voltage for VariMax UINT 16 Read V 6 Operating mode Source for speed reference value s in current use 1 Low speed DIP switch ON 2 High speed DIP switch ON 3 Manual speed 17 Control signal 32 No ope...

Page 25: ...available To ensure the correctness of the measured value the speed reference value should be changed This will cause the registry to read as 0 until the current value is displayed UINT 16 Read 100 r...

Page 26: ...2 Read 45 Modbus packets error Number of faulty packets in Modbus UINT 32 Read 47 Total operating time Total operating time for the control unit UINT 32 Read s 49 Fault waiting time Time with an activ...

Page 27: ...9 Stop time cold temp Time with stopped motor below 0 C UINT 32 Read s 61 Running time high temp Time with motor running in excess of 75 C UINT 32 Read s 63 Running time warm temp Time with motor runn...

Page 28: ...ue efficacy See Input signal rotation speed page 10 1000 100 of max speed setting UINT 16 Read Write 10 3 Reference value reference absolute speed 100 1 rpm Absolute speed is not affected by the setti...

Page 29: ...27 PERSONAL NOTES...

Page 30: ...28 PERSONAL NOTES...

Page 31: ...29 PERSONAL NOTES...

Page 32: ...IBC control AB Br nnerigatan 5 A SE 263 37 H gan s Sweden Tel 46 42 33 00 10 www ibccontrol se info ibccontrol se IBCcontrol F21050904GB VERSION 1 1 1 2019 09 16...

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