en tire system o r m a c h in e ry uses the S afe D isable fun ction in co m p lia n ce w ith s a fe ty requirem ents. W hen im p le m e n tin g the Safe

D isable fu n ctio n in to the s a fe ty system o f a m achine, a th o ro ug h ris k a sse ssm e n t fo r the w hole system m u st b e ca rrie d o u t to e n sure it

com p lie s w ith re le v a n t s a fe ty n o rm s (e.g., E N 9 54 /IS O 13 849 , IE C 61508, E N /IE C 62061).

S udden M o ve m e n t H azard. W hen u sin g a P M motor, even i f the drive o u tp u t is shu t o ff b y the Safe D isable function, a

b re a k do w n o f tw o o u tp u t transisto rs can cau se cu rre n t to flo w throu gh the m o to r winding, re s u ltin g in a ro to r m o ve m e n t fo r a

m axim um an gle o f 180 de gre es (electrically). E nsu re this c on dition w ill n o t a ffe ct the s a fe ty o f the a p plicatio n w hen u sin g the Safe

D isable function. F a ilu re to c o m p ly w ill re s u lt in de ath o r seriou s injury.

E le c tric a l S h o c k H azard. The S afe D isable fun ction can sw itch o ff the drive output, b u t does n o t cut the drive p o w e r s up ply

a n d ca n n o t e le c tric a lly iso la te the drive o u tp u t from the input. A lw a ys shu t o ff the drive p o w e r s u p p ly w hen performing^ m a in te n a n c e o r

in sta lla tio n s on the drive in p u t side as w e ll as the drive ou tput side. F ailure to c o m p ly w ill re su lt in de ath o r serious injury.

S udden M o v e m e n t Hazard. W hen using the Safe D isable inputs, m a ke sure to re m o ve the w ire lin k s be tw ee n term inals

H1, H2, a n d H C th a t w ere in s ta lle d p rio r to shipm ent. F a iling to do so w ill ke e p the Safe D isable circu it from op e ra tin g p ro p e rly a n d can

cau se in ju ry o r even death.

A ll s a fe ty fea tu res (in clu d in g S afe D isable) s h o u ld be in s p e c te d da ily a n d periodically. I f the system is n o t opera ting

norm ally, the re is a ris k o f seriou s p e rs o n a l injury.

O nly a q u a lifie d tech nician with a th o ro ug h un de rsta n d in g o f the drive, the in stru c tio n m anual, a n d s a fe ty stan dard s sho uld

b e p e rm itte d to wire, inspect, a n d m a in ta in the S afe D isable input. F ailure to c o m p ly m a y re s u lt in seriou s in ju ry o r death.

From the m o m e n t te rm in a l in pu ts H1 a n d H 2 ha ve opened, it takes up to 1 m s fo r drive o u tp u t to shu t o ff com pletely. The

se q u e n ce s e t up to trig g e r term in als H1 a n d H 2 s h o u ld m a k e sure th a t bo th term in als re m a in op en fo r a t le a s t 1 m s in o rd e r to p ro p e rly

in te rru p t drive output. This m a y re su lt in the S afe D isa b le In p u t n o t activating.

The S afe D isable M o n ito r (ou tp ut term in als D M + a n d D M -) sh o u ld n o t b e u s e d fo r a n y o th e r p u rp o s e than to m o n ito r the

S afe D isable status o r to d is co v e r a m a lfu n ctio n in the S afe D isable inputs. The m o n ito r o u tp u t is n o t c o n s id e re d a safe output.

W hen utilizin g the S afe D isable function, use on ly the E M C filters re c o m m e n d e d in E M C F ilt e r In s ta lla tio n o n p a g e 3 9 8 .

♦ Using the Safe Disable Function

■ Safe Disable Circuit

page 63

Refer to Output Terminals on

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