1 4 0
M O T OR DRIV E ALARMS
8.1.5 M O T OR DRIV E AL ARMS / M
i
ss
i
ng pu
l
se tr
i
p enab
l
e PIN 1 7 5
The contro
ll
er cont
i
nuous
l
y mon
i
tors the armature current w aveform. If a fau
l
t deve
l
ops w
i
th
i
n the contro
ll
er
or the armature br
i
dge,
i
t
i
s poss
i
b
l
e that one or more pu
l
ses may be m
i
ss
i
ng from the norma
l
6-pu
l
se
armature current w aveform. A
l
though the contro
ll
er may appear to funct
i
on norma
ll
y, the motor w
ill
exper
i
ence excess heat
i
ng due to the d
i
storted current w aveform.
If at
l
east one of the 6 current pu
l
ses
i
s m
i
ss
i
ng from the feedback w aveform and the current demand
i
s
above 1 0 % then the system w
ill
start count
i
ng m
i
ss
i
ng pu
l
ses. The a
l
arm w
ill
tr
i
gger after a sequent
i
a
l
ser
i
es
of m
i
ss
i
ng pu
l
ses
l
ast
i
ng approx
i
mate
l
y 3 0 seconds.
The most usua
l
causes of m
i
ss
i
ng pu
l
se fa
il
ure
i
s e
i
ther an open c
i
rcu
i
t ma
i
n fuse, or a gate
l
ead p
l
ug not
proper
l
y re-connected after a stack ma
i
ntenance procedure. A
l
arm de
l
ay t
i
me: approx 3 0 secs.
8.1.6 M O T OR DRIV E AL ARMS / Reference exchange tr
i
p enab
l
e PIN 1 7 6
The dr
i
ve can transm
i
t and rece
i
ve a speed reference or other parameter to or from another contro
ll
er us
i
ng
the ser
i
a
l
port. Dur
i
ng the rece
i
ve cyc
l
e
i
t checks that the data rece
i
ved
i
s va
li
d. If the data
i
s
i
nva
li
d then
i
t
ra
i
ses an a
l
arm. Th
i
s
i
s on
l
y app
li
cab
l
e
i
n the SLA V E mode of operat
i
on. See 1 0.3 RS2 3 2 PORT 1 / PORT 1
REF E X C H A N GE The a
l
arm f
l
ag
i
s ava
il
ab
l
e on h
i
dden PIN 7 0 1.
A
l
arm de
l
ay t
i
me: 1.5 secs.
8.1.7 M O T OR DRIV E AL ARMS / O verspeed de
l
ay t
i
me PIN 1 7 7
See 8.1.1 1.7 DRIV E TRIP MESS A GE / O verspeed.
M O T OR DRIV E AL ARMS 2
1 7 5)MISSIN G PULSE EN
1 7 5)MISSIN G PULSE EN
EN A BLED
PAR A ME TER
RA N GE
DEF A ULT
PIN
MISSIN G PULSE EN
EN A BLED OR DIS A BLED EN A BLED
1 7 5
A
ll
o w s the m
i
ss
i
ng pu
l
se a
l
arm
tr
i
p to be d
i
sab
l
ed.
M O T OR DRIV E AL ARMS 2
1 7 6)REF E X C H TRIP EN
1 7 6)REF E X C H TRIP EN
DIS A BLED
PAR A ME TER
RA N GE
DEF A ULT
PIN
REF E X C H TRIP EN
EN A BLED OR DIS A BLED DIS A BLED 1 7 6
Enab
l
es the REFEREN CE
E X C H A N GE data
li
nk a
l
arm tr
i
p.
M O T OR DRIV E AL ARMS 2
1 7 7)O V ERSPEED DEL A Y
1 7 7)O V ERSPEED DEL A Y
5.0 SE C S
PAR A ME TER
RA N GE
DEF A ULT
PIN
O V ERSPEED DELA Y
0.1 to 6 0 0. 0 seconds
5.0 secs
1 7 7
Sets the the de
l
ay t
i
me before
the overspeed a
l
arm
i
s
l
atched.
Summary of Contents for PLX
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