Delta 28-299A Instrucciones de operaciones Pagina 68
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Valorado. / 5. Basado en revisión del cliente
D
Display Possible cause/Suggested solution
Motor Thermistor The motor thermistor input has been enabled and:
-
The resistance at the thermistor input has exceeded 3.6 k˖ for more than one second.
-
The motor winding has overheated. Identify the cause of the overheating and allow the motor to
cool before restarting.
-
The motor thermistor input has been open.
NOTE
If a valid motor thermistor is no longer used, a 1.2 k˖ resistor must be fitted across
terminals 05, 0
6.
Related Pars.: 16-9
Network Comms The network master has sent a trip command to the starter, or there may be a network communi-
cation problem.
Check the network for causes of communication inactivity.
Related Pars.: 16-11
Parameter out of Range -
-
A parameter value is outside the valid range.
The starter will load the default value for all affected parameters. Press M
MAIN MENU
to go to the first
invalid parameter and adjust the setting.
Related Pars.: None
Phase Sequence The phase sequence on the soft starter's input terminals (L1, L2, L3) is not valid.
Check the phase sequence on L1, L2, L3 and ensure the setting in Par. 2-1 is suitable for the instal-
lation.
Related Pars.: 2-1
Power Loss The starter is not receiving mains supply on one or more phases when a Start Command is given.
Check that the main contactor closes when a start command is given, and remains closed until the
end of a soft stop.
Related Pars.: 15-5
Starter/Comms -
-
There is a problem with the connection between the soft starter and the optional communications
module. Remove and reinstall the module. If the problem persists, contact your local distributor.
-
There is an internal communications error within the soft starter. Contact your local distributor.
Related Pars.: 16-10
Thermistor Cct The thermistor input has been enabled and:
-
The resistance at the input has fallen below 20 ˖ (the cold resistance of most thermistors will be
over this value) or
-
A short circuit has occurred. Check and resolve this condition.
Check that a PT100 (RTD) is not connected to 05, 06.
Related Pars.: None.
Time - Overcurrent The MCD 500 is internally bypassed and has drawn high current during running. (The 10A protection
curve trip has been reached or the motor current has risen to 600% of the motor FLC setting.)
Related Pars.: None
Undercurrent The motor has experienced a sharp drop in current, caused by loss of load. Causes can include broken
components (shafts, belts or couplings), or a pump running dry.
Related Pars.: 2-4, 2-5, 16-3
Unsupported Option The selected function is not available (e.g. jog is not supported in inside delta configuration).
Related Pars.: None
Troubleshooting MCD 500 Operating Instruction
MG.17.K3.02 - VLT
®
is a registered Danfoss trademark 67
9 9
- Operating Instructions 1
- MG.17.K3.02 - VLT 2
- 5 Application Examples 3
- 6 Operation 3
- 7 Programming 4
- 9 Troubleshooting 5
- 10 Specifications 5
- 1 Safety 6
- 2 Introduction 7
- 177HA382.11 8
- 3 Installation 9
- 177HA514.10 10
- 4 Electrical Installation 11
- 4.1.3 Remote Inputs 12
- 4.1.4 Serial Communication 12
- 4.1.5 Earth Terminal 12
- 177HA542.11 13
- 4.1.7 Motor Connection 14
- 4.2 In-Line Installation 14
- 177 HA4 31.11 15
- 177HA500.11 16
- 4.4 Current Ratings 17
- Start Time (seconds) 19
- Starts Per Hour 19
- 4.6 Bypass Contactor 22
- 4.7 Main Contactor 22
- 4.8 Circuit Breaker 22
- 4.9 Power Factor Correction 22
- 4.10 Fuses 23
- 4.10.1 Power Supply Fuses 23
- 4.10.4 Ferraz Fuses - HSJ 25
- 4.11 Schematic Diagrams 28
- 177HA426.11 29
- 5.3 Starting Modes 31
- 5.3.1 Constant Current 31
- 5.3.2 Current Ramp 31
- Voltage (% full voltage) 32
- 177HA511.10 33
- 5.6 Inside Delta Operation 34
- 5.7 Typical Start Currents 34
- 177HA522.10 36
- 177HA523.10 37
- 5.10 Emergency Run Operation 38
- 5.11 Auxiliary Trip Circuit 39
- 5.12 Soft Braking 40
- 5.13 Two Speed Motor 41
- 6.2 Control Methods 44
- 6.3 Local Control Buttons 44
- 6.4.8 Date and Time (S8) 46
- 6.4.9 SCR Conduction Bargraph 46
- 6.4.10 Performance Graphs 46
- 7.2 Quick Menu 48
- 7.2.1 Quick Setup 48
- 7.2.2 Application Setups 49
- 7.2.3 Loggings 50
- 7.3 Main Menu 50
- 7.3.1 Parameters 50
- 7.3.2 Parameter Shortcut 50
- 7.3.3 Parameter List 51
- 7.4 Primary Motor Settings 52
- 7.4.1 Brake 53
- 7.5 Protection 53
- 7.5.1 Current Imbalance 53
- 7.5.2 Undercurrent 53
- 7.5.4 Frequency Trip 54
- 7.6 Inputs 54
- * [00:00 - 30:00 55
- 7.7 Outputs 56
- 7.7.1 Relay A Delays 56
- 7.7.2 Relays B and C 56
- 7.7.4 Motor Temperature Flag 57
- 7.7.5 Analog Output A 57
- 7.8 Start/Stop Timers 57
- 7.9 Auto-Reset 58
- 7.9.1 Auto-Reset Delay 58
- 7.10 Secondary Motor Set 58
- 7.11 Display 60
- 7.11.2 Performance Graphs 61
- 7.12 Restricted Parameters 61
- * [100 - 2000 62
- 8.1 Set Date and Time 63
- 8.2 Load/Save Settings 63
- 8.3 Reset Thermal Model 63
- 8.4 Protection Simulation 63
- 8.5 Output Signal Simulation 64
- 8.6 Digital I/O State 64
- 8.7 Temp Sensors State 64
- 8.8 Alarm Log 64
- 8.8.1 Trip Log 64
- 8.8.2 Event Log 65
- 8.8.3 Counters 65
- 9.2 General Faults 69
- Symptom Probable Cause 70
- 10.1 Accessories 72
- 10.1.1 Communication Modules 72
- 10.1.2 PC Software 73
- 10.1.3 Finger Guard Kit 73
- *MG17K302* 77
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