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February 2004
Installation
Installation of the controller simply required fabricating mounts to hold the controller.
A frame was constructed which profices a platform for mounting other components above the controller.
Instrumentation
There Seimens controller has over 150 different variables which can be displayed:
| ID |
Symbol |
Description |
116
|
IbrMax |
Maximum motor regen current |
107
|
I_max |
Maximum motor drive current |
Operating Temperature
The normal operating temperature for the Siemens units are as follows (from display):
Heatsink Temp (54 HS1_Tmp, 55 HS2_Tmp)
Motor Temp (56 Mot1_Tmp, 57 Mot2_Tmp)
The maximum values for the temperature are (from parameters:)
Heatsink Temp Limit (200 HS_Tmp_Lim) 75oC
Motor Temp (201 Mot_Tmp_Lim) 165oC
Motor Temp Emergency Power Off (208 Mot_Tmp_EPO) 200oC
The fan is controlled by the parameters:
Fan on temperature (415 Tmp_Fan_On) 35oC
Fan hysterisis (416 Mot_Fan_Hyst) 5oC (subtract this amount to determine fan off temperature)
Programming Parameters
There are many programming options available for the Seimens Controller
General Parameters
| Quantity |
Units |
Symbol |
| 106 |
n_Emerg_PowerOf
|
If this RPM is reached, the contactors open. Value cannot be changed. |
12000 |
| 106 |
n_epo_Restart
|
When motor RPM drops to this leve the contactors will close after EPO. Value cannot be changed. |
1000 |
Regen Parameters
| Quantity |
Units |
Symbol |
I_MotBrake
|
Off throttle maximum regen current. Cannot exceed IBrake_Max |
I_brake
|
Regen current when brake pedal applied. Cannot exceed IBrake_Max |
102 Iabs_Rated (locked)
|
|
103
|
IabsMax |
Max motor drive or regen current. Used to protect the inverter. Decrease lineraly if temperature exceeds 200 HS_Tmp_Lim |
To use Switched Regen
Switched regen uses the brake light switch to activate a fixed regen amount. When the brake pedal is activated, an immediate on about of regen is felt.
Here are the settings to activate switched regen:
300 Mode_Selector set bit 3 to true
365 I_BrakeMax leave at default - 200 Amps. This is the maximum amount of regen current the motor can generate.
431 IBat_Max_Neg. Adjust this amount to deliver the desired amount of regen. Start with 10 Amps and adjust for brake pedal feel.
Battery Pack Parameters
| Quantity |
Units |
Symbol |
430
|
Ibat_Max_Pos |
Maximum battery current during drive. Used to protect battery pack from too much current flowing out |
431
|
Ibat_Max_Neg |
Maximum battery current during regen. Set low to protect battery from overcharge. |
432
|
Ibat_Red_Pos |
Maximum battery current during drive when reduced power switch is active. Used to protect battery pack from too much current flowing out |
433
|
Ibat_Red_Neg |
Maximum battery current during regen when reduced power switch is active. Set low to protect battery from overcharge. |
420
|
Ubat_Undervolt |
If batteries drop below this voltage, the contactors will open to protect batteries. |
421
|
Ubat_Min |
If batteries drop below this voltage, I_Max is gradually decreased to prevent over discharging of the batteries. |
422
|
Ubat0_Min |
If batteries are below this voltage, the contactors will not close on start. |
423
|
Ubat0_Max |
If batteries are above this voltage, the contactors will not close on start. |
424
|
Ubat_Max |
When batteries are at this voltage, I_Brake is gradually reduced to prevent overcharging of the batteries during regen. Max 380V. |
425
|
Ubat0_Overvolt |
When batteries are above this voltage the contactors will open. |
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