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7 Troubleshooting

7.1  Alarm, Warning and Extended Status

Word

7.1.1 Alarm and Warning Messages

General
There is a clear distinction between alarms and warnings. In
the event of an alarm, the frequency converter will enter a
fault condition. After the cause for the alarm has been
cleared, the master must acknowledge the alarm message in
order to start operation of the frequency converter again. A
warning, on the other hand, may appear when a warning
condition arises, then disappear when conditions return to
normal without interfering with the process.

Alarm Word and Warning Word are shown on the display in
Hex format. If there is more than one warning or alarm, a
sum of all warnings or alarms will be shown. Warning Word
and Alarm Word are displayed in par. 16-90 to 16-95. For
more information on the individual alarms and warnings,
please refer to: 

VLT

®

 HVAC Drive Design Guide

.

Warnings
All warnings within the frequency converter are represented
by a single bit within a Warning Word. A Warning Word is
always an action parameter. Bit status FALSE [0] means no
warning, while bit status TRUE [1] means warning. Each bit
status has a corresponding text string message. In addition
to the Warning Word message the master will also be
notified via a change to bit 7 in the status word.

Alarms
Following an alarm message the frequency converter will
enter a fault condition. Only after the fault has been rectified
and the master has acknowledged the alarm message by
setting bit 3 in the Control Word, can the FC resume
operation. All alarms within the FC are represented by a
single bit within an Alarm Word. An Alarm Word is always an
action parameter. Bit status FALSE [0] means no alarm, while
bit status TRUE [1] means alarm.

Troubleshooting

VLT

®

 HVAC Drive Native BACnet Operating Instructions

MG.14.C1.02 - VLT

®

 is a registered Danfoss trademark

27

7

7

Содержание Native BACnet VLT HVAC Drive

Страница 1: ...MAKING MODERN LIVING POSSIBLE Operating Instructions Native BACnet VLT HVAC Drive...

Страница 2: ...10 4 How to Configure the System 11 4 1 Configuring BACnet 11 4 2 Example of a simple setup of BACnet 12 5 BACnet Objects 13 5 1 Feedback to Network 20 5 2 BIBBs 20 6 Parameters 22 6 1 Parameter Over...

Страница 3: ...notify former or present users of such revisions or changes 1 1 2 Safety Note Safety Regulations 1 The frequency converter must be disconnected from mains if repair work is to be carried out Check tha...

Страница 4: ...s been stopped may start if faults occur in the electronics of the frequency converter or if a temporary overload or a fault in the supply mains or the motor connection ceases 1 1 3 Symbols Symbols us...

Страница 5: ...rent and short circuit protection Selection of power cables mains motor brake loadsharing and relay Grid configuration grounded delta transformer leg IT TN etc Safety of low voltage ports PELV conditi...

Страница 6: ...vice Requests it must be able to initiate Conformance Class 6 requires 21 types of Service Requests of the 32 overall to be implemented of which 20 must be initi able and 17 executable Conformance Cla...

Страница 7: ...11 Dx yy Operating Instructions VLT HVAC Drive LonWorks MG 11 Ex yy Operating Instructions VLT HVAC Drive Metasys MG 11 Gx yy Operating Instructions VLT HVAC Drive FLN MG 11 Zx yy Output Filter Desig...

Страница 8: ...repeater is a node in both of the two segments it connects The number of frequency converters is based on a single master system If there are two or more devices e g PC tools Routers the number of fr...

Страница 9: ...requency converter 2 Connect the cable screen as described under chapter Bus Cabling NOTE Screened twisted pair cables are recommended to reduce noise between conductors 3 1 3 Network Termination 130B...

Страница 10: ...e when operating the switches The switches must not be operated with power on the frequency converter 130BT310 10 1 2 N O VLT BUS TER OFF ON A53 A54 U I U I 3 1 5 Cable Routing The BACnet communicatio...

Страница 11: ...hat a lightning stroke will be carried from one building to another and problem with difference in earth potential can be neglected 3 2 3 Multiple Ground Shielding If the distance between the individu...

Страница 12: ...ding on the system and each device connected to the BACnet MS TP must have a unique adress on this MS TP network Please also see section Parameter Overview Parameter List Parameter Default Value Setti...

Страница 13: ...eed Set the following parameters Parameter Value 8 30 Protocol BACnet 5 8 31 Address 20 8 32 Baud Rate 38 400 Baud 4 8 50 Coasting Select Bus 1 8 70 BACnet Device Instance 1025 8 72 MS TP Max Masters...

Страница 14: ...1676 MCB 101 AI 4 Analog In X42 1 1830 V MCB 109 AI 5 Analog In X42 3 1831 V MCB 109 AI 6 Analog In X42 5 1832 V MCB 109 Table 5 1 Analog Inputs Object Map ID Object_Name Present_Value Default name Pa...

Страница 15: ...14 AV 15 Motor Thermal 1618 AV 16 Reserved for VFD profile AV 17 AV 18 AV 19 AV 20 AV 21 Operating Hours 1500 Hours AV 22 Running Hours 1501 Hours AV 23 kWh Counter 1502 kWh AV 24 Motor Voltage 1612 V...

Страница 16: ...it 2096 NONE x Table 5 3 Analog Values 1 Either AV 1 or AV 2 controls the drive reference Only one of them can control the frequency converter at a time and BV 2 decides which one 2 This value is not...

Страница 17: ...exceeded External Fault 12 142 External fault has been activated in the inverter This is a hard fault that must be reset Operator Interface Error 13 Inverter programming or operational interface malf...

Страница 18: ...ved for P1660 x MCB 115 Table 5 5 Binary Inputs ID Object_Name Present_Value Default name Parameter Bit number Writeable Cmd able Timeout Option BO 0 Digital Output Term 27 590 0 x x x BO 1 Digital Ou...

Страница 19: ...for VFD profile BV 8 BV 9 BV 10 BV 11 BV 12 BV 13 BV 14 BV 15 BV 16 BV 17 BV 18 BV 19 BV 20 BV 21 Warning x x STW 7 BV 22 Trip x x STW 3 BV 23 Triplock STW 6 BV 24 Coasting CTW 3 x x x BV 25 CW CCW C...

Страница 20: ...110 3 MCO 104 BV 39 Reserved for ECB MCO 104 3110 bit 4 10 BV 40 BV 41 BV 42 BV 43 BV 44 BV 45 5 1 3 Multi state Value Objects ID Object_Name Present_Value Timeout Default name Parameter Bit number Wr...

Страница 21: ...pon control of the frequency converter can be programmed in 8 50 Coasting Select to 8 56 Preset Reference Select 8 01 Control Site overrules the settings in parameters 8 50 to 8 56 and Terminal 37 Saf...

Страница 22: ...tocol Revision X Services Supported X Object List X Max APDU Length X Segmentation Support X Local Time X Local Date X APDU Timeout X Number APDU Retries X Max Master X Max Info Frames X Device Addres...

Страница 23: ...gic OR 3 0 3 5 8 54 Reversing Select Logic OR 3 0 3 5 8 55 Set up Select Logic OR 3 0 3 5 8 56 Preset Reference Select Logic OR 3 0 3 5 8 70 BACnet Device Instance 1 1 4194304 8 72 MS TP Max Masters 1...

Страница 24: ...Visible String VisStr 33 Normalized value 2 bytes N2 35 Bit sequence of 16 boolean variables V2 54 Time difference w o date TimD See the frequency converter Design Guide for further information about...

Страница 25: ...selected in 8 04 Control Timeout Function will then be carried out In BACnet the following variables will trigger the Control Word Time parameter Analog Outputs Binary Outputs AV0 AV1 AV2 8 03 Contro...

Страница 26: ...naround delays 8 36 Maximum Response Delay Range Function Size related 11 10001 ms Specify the maximum permissible delay time between transmitting a request and receiving a response Exceeding this del...

Страница 27: ...ia the fieldbus serial communication port OR via one of the digital inputs 8 56 Preset Reference Select Option Function Select control of the frequency converter Preset Reference selection via the ter...

Страница 28: ...and warnings please refer to VLT HVAC Drive Design Guide Warnings All warnings within the frequency converter are represented by a single bit within a Warning Word A Warning Word is always an action...

Страница 29: ...supply fault 04000000 Brake resistor short circuit 08000000 Brake chopper fault 10000000 Option change 20000000 Drive initialised 40000000 Safe Stop 80000000 Not used 16 91 Alarm Word 2 Bit Hex Alarm...

Страница 30: ...ins failure 02000000 Current limit 04000000 Low temperature 08000000 Voltage limit 10000000 Encoder loss 20000000 Output frequency limit 40000000 Not used 80000000 Not used 16 93 Warning Word 2 Bit He...

Страница 31: ...www danfoss com drives MG14C102 130R0235 MG14C102 Rev 2010 08 31...

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