LS-221-BL Technical Reference
Doc. #710220125
15
97 2930 2b
Figure 6: Servo control and diagnostic
T h e re a re s e v e ra l s o u rc e s th a t c a n c a u s e s e rv o lo o p to b re a k .
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M o to r P o w e r F a ilu re (M P F )
T o p o w e r th e m o to rs , L S -2 2 1 -B L re q u ire s s e p a ra te p o w e r s u p p ly is o la te d fro m th e
c o m p u te r g ro u n d a n d fro m th e o p e ra tin g (2 4 V ) p o w e r s u p p ly a s w e ll. If M o to r P o w e r is
b e lo w th e u n d e rv o lta g e lim it o r a b o v e th e o v e rv o lta g e lim it, M P F is s e t to lo g ic o n e a n d
A E is a u to m a tic a lly d is a b le d . M P F is a ls o s e t to lo g ic o n e in c a s e o f le a k a g e b e tw e e n
h ig h v o lta g e m o to r c irc u its a n d a n y o f lo w v o lta g e c o m p u te r o r 2 4 V c irc u its . A c u rre n t a s
lo w a s 0 .5 m A w ill trig g e r th e p ro te c tio n . T h e c u rre n t M P F v a lu e is la tc h e d a s M P F L a t
th e m o m e n t th e s e rv o lo o p is b ro k e n .
R/W access
D7
D6
D5
D4
D3
D2
D1
D0
Base Addr + 0xB
Read
EMG
STP
MPF
OPF
EMGL
STPL
MPFL
OPFL
Table 6: MPF status
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O u tp u t O ve rlo a d / O p e ra tin g P o w e r F a ilu re (O P F )
T h e o p e ra tin g p o w e r re q u ire d fo r th e O u tp u ts a n d O u tb o u n d P o w e r S o u rc e s m u s t b e
2 4 V
±
2 0 % . If it is o u t o f ra n g e , th e O P F is s e t to lo g ic o n e a n d A E is a u to m a tic a lly
