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General technical data
ACSM1 DC voltage limits
All ACSM1 drive modules have own terminals for the DC connection.
Different limit values in ACSM1 drive modules related to DC voltage level
are defined in the table below. Please see ACSM1 firmware manual for the
more detailed descriptions.
Designation Symbol Unit Value (Udc=540V)
Nominal DC voltage U
dcN
V 540 540
DC voltage range U
dc
V 436…713 +/- 0% 540
Charging limit U
dc,chr
V
U×%80
432 (80% Udc)
DC voltage control: Over voltage
control limit
U
dc,ovc
V 810 810 (150% Udc)
DC voltage control: Under voltage
control limit
U
dc,uvc
V
400,%70 ≥×
U
400 (74% Udc)
DC over voltage trip limit U
dc,ovt
V 880 880 (163% Udc)
DC under voltage trip limit U
dc,uvt
V 350 350 (65% Udc)
Braking chopper limit, low U
dc,brcl
V 780 780 (144% Udc)
Braking chopper limit, high U
dc,brch
V 840 840 (156% Udc)
U
dc
in the column (“Value”), where the values are defined, is based on the
ACSM1 drive module setting for the used supply voltage. The used supply
voltage can be set by parameter (Par. 47.03 and 47.04) or identified
automatically. Used U
dc
value is then defined with following formula.
U
dc
= 1.35 x (signal: 1.19 USED SUPPLY VOLT)
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