13
Mounting
Derating curves
Derating curves for the nominal drive current (In) as a function of temperature, switching frequency and mounting type.
ER12-0...K/B, ER12-0.../3K/B, ER12-0.18KU, ER12-0.37KU/BU
For intermediate temperatures (e.g. 55˚C (131˚F)), interpolate between two curves.
Bus voltage measurement procedure
The DC bus voltage can exceed 400 Vdc. Use a properly rated voltage-sensing device when performing this procedure. To measure the
DC bus voltage:
1 Disconnect all power.
2 Wait 15 minutes to allow the DC bus to discharge.
3 Measure the voltage of the DC bus between the PA/+ and PC/– terminals to ensure that the voltage is less than 42 Vdc.
4 If the DC bus capacitors do not discharge completely, contact your local BLEMO representative. Do not repair or operate the drive.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
Read and understand the precautions in “Before you begin” on page 5 before performing this procedure.
Failure to follow these instructions will result in death or serious injury.
40˚C (104˚F) mounting types A and C
50˚C (122˚F) mounting type C with metal plate
Switching frequency in kHz
40˚C (104˚F) mounting type B
60˚C (140˚F) mounting types A, B and C
Switching frequency in kHz
ER12-1.5K/B, ER12-2.2K/B, ER12-0.75KU, ER12-1.5/3K/B bis ER12-4.0/3K/B
50˚C (122˚F) mounting types A, B and C
60˚C (140˚F) mounting type C with metal plate
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