33
SSA - Rev 6/98
8
8
8
.
.
.
A
A
A
m
m
m
p
p
p
l
l
l
i
i
i
f
f
f
i
i
i
e
e
e
r
r
r
a
a
a
d
d
d
j
j
j
u
u
u
s
s
s
t
t
t
m
m
m
e
e
e
n
n
n
t
t
t
a
a
a
n
n
n
d
d
d
d
d
d
i
i
i
a
a
a
g
g
g
n
n
n
o
o
o
s
s
s
t
t
t
i
i
i
c
c
c
s
s
s
Important remarks:
A. If all the previous steps were accomplished you may now turn the power on and
continue with the following adjustments. You may skip the step for current mode or
velocity mode according to your application.
B. In some applications, especially those where the motor electrical parameters (total
inductance and resistance in the armature circuit) are much smaller or larger than
normally encountered, the current loop response should be optimized before proceeding
with the following steps - See Appendix A.
8
8
8
.
.
.
1
1
1
B
B
B
a
a
a
l
l
l
a
a
a
n
n
n
c
c
c
e
e
e
a
a
a
d
d
d
j
j
j
u
u
u
s
s
s
t
t
t
m
m
m
e
e
e
n
n
n
t
t
t
If the motor is rotating with the command signal at zero voltage, a balance
adjustment will be necessary. Turn the balance trimmer (T2) as required until the
motor stops. As a rule, have the command signal connected and set to zero when
balancing the amplifier. This way, any offset in the command signal will be
canceled.
8
8
8
.
.
.
2
2
2
V
V
V
e
e
e
r
r
r
i
i
i
f
f
f
y
y
y
i
i
i
n
n
n
g
g
g
t
t
t
h
h
h
e
e
e
s
s
s
t
t
t
a
a
a
t
t
t
i
i
i
c
c
c
c
c
c
u
u
u
r
r
r
r
r
r
e
e
e
n
n
n
t
t
t
l
l
l
i
i
i
m
m
m
i
i
i
t
t
t
s
s
s
To measure the current limits, a load must be connected (choke or motor
armature) to the armature output. Measurement can be done either by direct
current measurement or by using the current monitor (terminal 7).
3
current monitor scale = --------- (V/A)
Ic(nom)
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