Delta 28-299A Operations Instructions Page 41
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N
NOTE
If the MCD-500 trips on supply frequency (Par. 16-5
Frequency) when the braking contactor KM2 opens, m
odify
the setting of Pars. 2-8 - 2-10.
5.13 Two Speed Motor
The MCD 500 can be configured for control of dual speed
Dahlander type motors, using a high speed contactor (KM1),
low speed contactor (KM2) and a star contactor (KM3).
NOTE
Pole Amplitude Modulated (PAM) motors alter the speed by
effectively changing the stator frequency usi
ng external
winding configuration. Soft starters are not suitable for use
with this type of two-speed m
otor.
When the soft starter receives a high speed start signal, it
closes the high speed contactor (KM1) and star contactor
(KM3), then controls the motor according to the primary
motor settings (par. 1-1 - 1-16.)
When the soft starter receives a low speed start signal, it
closes the low speed contactor (KM2). This closes Input A
and the MCD 500 controls the motor according to the
secondary motor settings (par. 7-1 - 7-16).
177HA527.10
2/T1
4/T2
6/T3
E
T4
T5
T6
T1
T2
T3
A6
A4
A5
1/L1
3/L2
5/L3
24
22
21
KA1
KA2
KA1
KA2
KM3
KA1
KM2KA2
KM1
KM2
KM3
KM1
KM3
KM1
KM3
KM2
S1
KM2
KM1
KA1
F1
17
18
25
11
16
15
3
6
7
5
4
2
1
1
Control voltage KA1 Remote start relay (low speed)
2
Remote control inputs KA2 Remote start relay (high speed)
3
Relay outputs KM1 Line contactor (high speed)
4
3-phase supply KM2 Line contactor (low speed)
5
Motor terminals KM3 Star contactor (high speed)
6
Remote low-speed start input S1 Reset contact
7
Remote high-speed start input 21, 22, 24 Relay output B
Application Examples MCD 500 Operating Instruction
40 MG.17.K3.02 - VLT
®
is a registered Danfoss trademark
55
- 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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