Rockwell Automation 20P PowerFlex Digital DC Drive User Manual
Page 137
Rockwell Automation Publication 20P-UM001I-EN-P - February 2013
137
Programming and Parameters
Chapter 3
MOT
OR C
ONTROL
Te
st
G
en
er
at
or
166
[Alpha Test]
Diagnostic test mode that selects the SCR bridge to activate. The SCR firing
angles are specified by Pars 167 [Arm Test Angle] and 168 [Fld Test Angle].
Important: Alpha Test is an open loop diagnostic tool that requires a
hardware Enable input be wired and functional at the terminal block.
Reading Alpha Test Mode on page
is required before completing this test.
0 = Off
1 = Armature Fwd
2 = Armature Rev
3 = Field Fwd
Note: This parameter was added for firmware version 3.001.
Default:
Options:
0 =
0 =
1 =
2 =
3 =
“Off”
“Off”
“Armature Fwd”
“Armature Rev”
“Field Fwd”
16-bit
Int
167,
168
167
[Arm Test Angle]
Sets the armature SCR firing angle for the Armature Forward and Armature
Reverse tests. 180 deg = minimum voltage, 5 deg = maximum voltage. This
parameter is only changeable while the Armature Alpha Test is selected.
Note: This parameter was added for firmware version 3.001.
Default:
Min/Max:
Units:
180
0 / 180
deg
Real
166
168
[Fld Test Angle]
Sets the field SCR firing angle for the Field Forward test. 180 deg = minimum
voltage, 5 deg = maximum voltage. This parameter is only changeable while
the Field Alpha Test is selected.
Notes: This parameter was added for firmware version 3.001.
Default:
Min/Max:
Units:
180
0 / 180
deg
Real
166
Fil
e
Gr
oup
No
.
Parameter Name & Description
See
page 110
for symbol descriptions
Values
Da
ta
T
yp
e
Rela
ted
A
ATTENTION: Only qualified electrical personnel familiar with the construction and operation of this equipment and
the hazards involved should perform this test. Failure to observe this precaution could result in equipment damage
and/or bodily injury.
ATTENTION: This is an open loop test, disconnect the motor armature and field leads and replace them with dummy
loads. Failure to observe this precaution could result in machine damage and/or bodily injury.
ATTENTION: Uncontrolled machine operation could result with a motor connected during these tests and may cause
personal injury and/or equipment damage. Verify that the drive is not connected to a motor armature circuit before
enabling these test modes.
A
A