Bitzer CM-SW-01 Reference Manual
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Bitzer CM-SW-01 Reference Manual

Bitzer CM-SW-01 Reference Manual

Compressor control module for the oska95103-k compressor
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Compressor control module for the OSKA95103-K compressor
Original document
Preliminary v 1.0C
CM-SW-01
Electrical skilled installer

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Summary of Contents for Bitzer CM-SW-01

  • Page 1 Compressor control module for the OSKA95103-K compressor Original document Preliminary v 1.0C CM-SW-01 Electrical skilled installer...

  • Page 2: Table Of Contents

    Capacity load 4.1.8 Daily counters 4.1.9 Runtime statistic 4.1.10 Compressor start statistic Control of the CM-SW-01 5.1 Commands and setpoint 5.1.1 Command Start Setpoint – and speed changes 5.1.2 5.2 Enable serial control 5.3 Required signals to start the compressor 5.3.1...
  • Page 3 Status – compressor 10.4.2 Status – motor 10.4.3 Status – device 10.4.4 Status – IO 10.4.5 10.5 Configuration data Configuration – application 10.5.1 Configuration – compressor 10.5.2 Configuration – COM1 10.5.3 Logs – application 10.5.4 Info – compressor type 10.5.5 Trouble shooting 11.1 Communications trouble shooting 11.2 Status LEDs...

  • Page 4: Read This First

    Any non-following of this reference guide result in exclusion of all warranties, guarantees, and liabilities. Copyright© 2016 by Lodam electronics a/s. All Rights Reserved. Disposing of the parts of the CM-SW-01: INFORMATION FOR USERS ON THE CORRECT HANDLING OF WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT (WEEE)

  • Page 5: Reference Guide

    SW-01 has not been correctly installed. Safety The CM-SW-01 is a protection device and not a safety component according to the Machinery Directive and cannot be used in “medical” or “life support” equipment Before commissioning, the service technician shall ensure that personal safety requirements are met in conformity with the Machinery Directive and local legislation based on safety estimations.

  • Page 6: Definitions

    Definitions BEST BEST Software Capacity Regulation Direct On Line (motor start) Electro Static Discharge Frequency inverter High Pressure Hardware/electronics. Input / Output (electrical signals in and out of a unit) Low Pressure Modbus Application-layer messaging protocol - http://www.modbus.org/specs.php Normally Closed (relay) Normally Open (relay) Negative Temperature Coefficient (sensor element) Positive Temperature Coefficient (sensor element)

  • Page 7: Functions

    There is a restart blocking function to prevent the motor from being started too soon after having been overheated. If the CM-SW-01 is locked, an external reset must be performed by either powering off the device for minimum 5 seconds or sending a reset command on the serial bus.

  • Page 8: Discharge Temperature

    If an oil level fault is detected, the status is immediately updated via Modbus. However, the first 90 seconds after compressor start, the fault signal is not activated. If the oil level is still too low, the CM-SW-01 releases the fault relay and locks out immediately.

  • Page 9: Application Limits

    The application limits function monitors if the operating conditions of the compressor is within the safe operation area limits – as shown in the BITZER Software when doing compressor calculations. The BITZER Software can be downloaded from BITZER’s homepage, www.bitzer.de.
  • Page 10 After a stop due to fault limit, the fault can be reset when the compressor is stopped. If timed resets are enabled, the CM-SW-01 will perform a timed reset otherwise an external reset is required. The CM-SW-01 will start the compressor again if the start command is active or when it is applied again.

  • Page 11: Datalog

    For faults only Set entries are found. E.g.: 07-11-2015 11:01 3431: High Pressure Switch - Fault - Set When all faults are successfully reset and the CM-SW-01 is no longer in fault state, there is an entry like this: 02-12-2015 10:45 0: No Fault - Fault - Clear Lifetime of alarm entries: 365 days.

  • Page 12: Statistics And Counters

    4.1.5 Statistics and counters Every midnight at 0:00 and at every Power Down a number of entries with counters or statistics are logged. Every one of these entries has a timestamp and some specific data as described below. 4.1.6 Accumulated operation counters All accumulated since first power up ...

  • Page 13: Control Of The Cm

    The Start command becomes active when a start signal is given via digital input or serial control. If the compressor is started too many times per hour, the CM-SW-01 will give a waning but the compressor will be allowed to start The capacity of the compressor will normally match the setpoint.

  • Page 14: Required Signals To Start The Compressor

    Running Note: Please observe max number of starts per hour Control commands can be given to the CM-SW-01 via the Serial Control Word. The bit definitions are shown in the table below. The protocol used is Modbus (RTU). Modbus register definitions are listed in section 10.3 Parameters.

  • Page 15: Examples Of Serial Control Word Setups

    1: Start command is given (e.g. start signal is given, setpoint > 0 %) and Operation is enabled Critical 0: No critical present 1: A critical is present. The CM-SW-01 is close at its limits and may soon stop the compressor 14-15 Reserved...

  • Page 16: Setting The Serial Setpoint

    (Control.SerSetpoint) 100.00 % communication scale 100 sint16 Serial Control Timeout Function If the communication is interrupted, the CM-SW-01 can be configured for different reactions to this interrupt  None – continue operation  Stop – stop operation  Fault – Stop and signal fault alarm Default function is to let the CM-SW-01 continue without any changes (None).

  • Page 17: I/O List For Cm

    Connector Name Type/ Logic Description Function Supply Supply for CM-SW-01 and control outputs; Supply 115 V-230 V; +10% ~ -15%, 50/60 Hz; max 500 VA with external components Fuse 8A T @115VAC; 4A T@230VAC K1 Ctrl Motor Activate K1 contactor Start 115 V-230 V;...
  • Page 18 Connector Name Type/ Logic Description Function CN11 PT1000 sensor; 0°C ~ +200°C; accuracy: ±2°C Ground Discharge pressure. Sensata 2CP5-71-47 (rel) or equivalent +5V Supply Supply +5 VDC; max 10 mA Signal Input Pressure 1 - 35 bar abs.; 0 - 5V ratio metric; accuracy ±1% Pdis CN12 Ground...

  • Page 19: Drawings

    Drawings Mounting is inside a new element for the terminal box. Size of the element depends on the compressor model. SG-150-1...

  • Page 20: Standards

    Standards The CM-SW-01 is manufactured according to the following standards  2011/65/EU RoHS  2014/35/EC Low voltage directive  2014/30/EC EMC directive The following standards have been used  EN 61010-1:2010 Safety requirement for electrical equipment for measurement and control ...

  • Page 21: Alarm System

    There are the following alarm severity types: Fault:  If a fault-level alarm condition is detected, the CM-SW-01 will open the relays for the motor contacts and stop the compressor motor.  A fault is logged in the fault log.

  • Page 22: Alarm List

    Alarm list Alarm Fault Text Warning Critical Fault type 10-* System - Operation 1000 Too many identical timed reset faults in 24 hours Extern 1001 Too many timed reset faults in 1 hour Extern 11-* System - Communication 1100 Serial Control Timeout Timed 12-* System - Supply...
  • Page 23 Alarm Fault Text Warning Critical Fault type 3400 Suction Pressure Low Timed 3411 Discharge Pressure High Timed 3431 High Pressure Switch Extern 35-* Compressor - Other Input 3500 Oil Level Low Extern 3501 Oil Fault Level Extern 3502 Oil Pressure Low Extern 3503 Oil Stop Valve...
  • Page 24 Alarm Fault Text Warning Critical Fault type 7304 Sensor: Motor Thermistor Timed 7308 Sensor: Discharge Temperature Timed 7320 Sensor: Aux Temperature Timed 74-* Sensor - Pressure 7401 Sensor: Suction Pressure Timed 7402 Sensor: Discharge Pressure Timed 7403 Sensor: Suction Pressure Signal Low Timed 7404 Sensor: Suction Pressure Signal High...
  • Page 25 Alarm Fault Text Warning Critical Fault type 8212 Output Current: CR- Low 8213 Output Current: CR- High 8214 Output Current: Vi+ Low 8215 Output Current: Vi+ High 8216 Output Current: Vi+ Low 8217 Output Current: Vi- High 8218 Output Current: HW Trip Extern 85-* Actuator - Other Input...

  • Page 26: Programming And Monitoring

    For monitoring and controlling the CM-SW-01, there is a built-in Modbus (RTU) interface. 10.2 Serial communication Communication with the CM-SW-01 is via Modbus (RTU). Configuration and reading of status from the CM- SW-01 is described in the following sections. CM-SW-01 (Slave) System controller (Master) 10.2.1...

  • Page 27: Data Values, Scaling And Data Types

    10.2.2 Data values, scaling and data types Following is a description of used scaling and data types. Scale 1, 10 and 100 refers to where the decimal point is implied, as a decimal value cannot be transmitted via Modbus. Scale 1: The value is the exact value Scale 10: To transmit a value it must be multiplied by 10;...

  • Page 28: Parameters

    10.3 Parameters The parameters are separated into logical groups. Setup of the parameters is possible via either Modbus or the BEST Software. Name: Parameter name. Possible values: Parameter unit, scale and range for some parameters. Default: The default settings of the parameters. Description: Description of the parameter and specific settings for some parameters marked with italics.

  • Page 29: Status Data

    1 active alarm uint8 (0=None, 1=Log, 2=Event, 4=Info, 8=Warning, 16=Critical, 32=Fault) Locked unit None If locked, the CM-SW-01 is IR 11104 scale 1 waiting for external reset uint8 command or restart (0=No, 1=Yes) Reset level required to unit None...
  • Page 30 Possible Modbus Name Default Description values type & addr AlarmStatus.Alarm8 unit None IR 11208 scale 1 uint16 AlarmStatus.Alarm9 unit None IR 11209 scale 1 uint16 AlarmStatus.Alarm10 unit None IR 11210 scale 1 uint16 The registers AlarmStatus.Alarm 1 .. Alarm10 are 16 bit values. The bit decoding is as follows: Description 0 ..
  • Page 31 Alarm Index Description number number 3025 Minimum Compressor Run Time Not Respected 3026 Minimum Compressor Start To Start Time Not Respected 3027 Compressor Start without being fully unloaded 3302 Discharge Temperature High 3400 Suction Pressure Low 3411 Discharge Pressure High 3431 High Pressure Switch 3500...

  • Page 32: Status - Compressor

    Alarm Index Description number number 8203 Output Current: Oil Heater High 8204 Output Current: Additional fan (Head fan) Low 8205 Output Current: Head Fan High 8206 Output Current: CR-1 Low 8207 Output Current: CR-1 High 8208 Output Current: CR-2 Low 8209 Output Current: CR-2 High 8210...
  • Page 33 Name Possible Default Description Modbus values type & addr High, 4=SDT High, 5=SST High, SDT High, 6=SST High, 7=SST High, SDT Low, 8=SDT Low) Discharge unit °C Discharge temperature IR 12010 temperature scale 10 sint16 AUX temperature unit °C AUX temperature IR 12011 scale 10 sint16...

  • Page 34: Status - Motor

    Motor start contactor 2 IR 13007 scale 1 (0=Off, 1=On) uint8 Note 1: For future compressor versions Status – device 10.4.4 The group contains operating state for the CM-SW-01 Possible Modbus Name Default Description values type & addr System operating...

  • Page 35: Status - Io

    Status – IO 10.4.5 The group contains status information for I/O of the CM-SW-01 Possible Modbus Name Default Description values type & addr Control Output unit A Control output current IR 15150 Current scale 100 sint16 State of the Operation...

  • Page 36: Configuration - Compressor

    Possible Modbus Name Default Description values type & addr Hour and Minute 0 - 5947 Hour and Minute HR 20102 scale 1 uint16 Millisecond 0 ms - 0 ms Millisecond HR 20103 59999 ms scale 1 uint16 Serial Control Source unit None Serial Control Source IR 20300...

  • Page 37: Logs - Application

    Possible Modbus Name Default Description values type & addr COM1 Stop Bits 1 - 2 Number of stop bits HR 65411 scale 1 (1=1 Stopbit, 2=2 Stopbits) uint8 COM1 Parity 0 - 2 Parity check HR 65412 scale 1 (0=None, 1=Even, 2=Odd) uint8 Setting of the parameters Address, Baud rate and Parity via BEST Software or Modbus will not result in immediate changes of the communication.

  • Page 38: Trouble Shooting

    Please observe that all registers in the parameters are index based, meaning they start with no. 1 and not with zero. Use BEST Software for viewing Modbus communication status. Return codes from Modbus communication if a telegram is not accepted by the CM-SW-01. Code Name...

  • Page 39: Status Leds

    11.2 Status LEDs There are four LEDs, one LED for communication and three status LEDs. They are visible through the sight glass on the side of the terminal box. LED Status Operation Mode Warning/Critical Fault Communication Flash Flash Green Yellow Blue Frequency Period...

  • Page 40: Led Flashing Patterns Of The Three Operation Status Leds

    11.3 LED flashing patterns of the three operation status LEDs Note: Text in Bold is the most normal situations/patterns  Start-up state: During start-up, the LEDs are constant on or off depending on the state of the system. Either the yellow or the red LED will be constant on when the Control Micro is in one of the start-up states.
  • Page 41 Fault (Restart / power cycle) Start-up state - init ressources - init subscribtions - init configuration - init config ready Terminate state, asserts and exceptions Assert in code NMI fault (exception) Hard fault (exception) Memory management fault (exception) Bus fault (exception) Usage fault (exception) Notes SG-150-1...
  • Page 42 Preliminary v. 1.0C // 09.2016 Subject to change BITZER Kühlmaschinenbau GmbH Eschenbrünnlestraße 15 // 71065 Sindelfingen // Germany Tel +49 (0) 70 31 932-0 // Fax +49 (0) 70 31 932-147 bitzer@bitzer.de // www.bitzer.de SG-150-1...

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