Iv a, Constant field current control, 1 constant field current control – DCS 500 User Manual

Page 26: Chapter 2 - start-up instructions

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Chapter 2 - Start-Up Instructions

IV A

2 - 14

DCS 500B / DCP 500B Operating Instructions

2.6 Balancing the field supply unit and the e.m.f. controller

When matching the field supply unit to the system conditions, differences in the proce-
dures adopted must be taken into account; these different procedures result from the op-
erating mode used. Only the work of that section has to be performed which deals
with the operating mode actually used in your system!

Constant field current control

Section 2.6.1

Field weakening control with setting range smaller than 1 : 1.5

Section 2.6.2

Field weakening control with setting range larger than 1 : 1.5

Section 2.6.3

2.6.1 Constant field current control

Switch ON power; start drive.

DANGER: System components now energized!

Drive should run up to 10 % of the speed.

12516 = increase slowly!

Internal reference value is increased; scaling: 20000 corresp. to 100 % speed or
motor voltage, defined with P 501.

Measure motor voltage with the U ARM AC signal by changing between MODE ACT
and PAR; with a value set with P 501, it must remain constant, or must not exceed this
value if 12516 = 20000.
The motor voltage must not exceed the recommended motor voltage; see General
notes
at the beginning of this chapter.

Measure speed with manual tacho;
check rated speed when an analog tacho is being used;
if necessary, correct with R9, R48 or R2716.

12516 = 0

Switch OFF power, thus stopping the drive!

Continue with Chapter 2.7

3ADW000055R0401_DCS500B_Operating Instruction_e_d

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