D.4 Safe Disable Input Function
D.4 Safe Disable Input Function
This section explains the Safe Disable function and how to use it in an elevator installation. Contact Yaskawa if more
information is required.
♦ Specifications
The Safe Disable inputs provide a stop function in compliance with “Safe Torque O ff’ as defined in the IEC61800-5-2.
Safe Disable inputs have been designed to meet the requirements o f the ISO13849-1, Cat. 3 PLd and IEC61508, SIL2.
A Safe Disable Status Monitor for error detection in the safety circuit is also provided.
I n p u t s / O u t p u t s
Two Safe D isable inputs and one E D M output according to ISO13849-1 Cat.3 PLd, IEC61508 SIL2.
O p e r a t i o n T i m e
Time from input open to drive output stop is less than 1 ms.
F a i l u r e P r o b a b i l i t y
D e m a n d R a t e L o w
PFD = 5.15E -5
D e m a n d R a t e H i g h o r
C o n t i n u o u s
PFH = 1.2E-9
P e r f o r m a n c e L e v e l
The Safe D isable inputs satisfy all requirements o f Performance Level (PL) d according to ISO13849-1 (DC from
E D M considered).
♦ Precautions
DAN GER!
S u d d e n M o v e m e n t H azard. Im p ro p e r u se o f th e S afe D is a b le fu n ctio n w ill re s u lt in seriou s in ju ry o r death. M a k e sure the
en tire system o r m a c h in e ry use s the S afe D is a b le fu n ctio n in c o m p lia n c e w ith s a fe ty req uire m en ts. W hen im p le m e n tin g the S afe
D is a b le fu n c tio n in to th e s a fe ty s ystem o f a m ach in e, a th o ro u g h ris k a s s e s s m e n t fo r the w h ole system m u s t b e c a rrie d o u t to e n s u re it
c o m p lie s w ith re le v a n t s a fe ty n o rm s (e.g., E N 9 5 4 /IS O 1 3 8 4 9 , IE C 61508, E N /IE C 6 206 1).
DANGER!
S ud de n M o v e m e n t H azard. W hen u s in g a P M m otor, eve n i f the drive o u tp u t is s h u t o ff b y the S afe D is a b le function, a
b re a k d o w n o f tw o o u tp u t tra n s is to rs c an ca u se c u rre n t to flo w th ro u g h th e m o to r winding, re s u ltin g in a ro to r m o v e m e n t fo r a
m a x im u m an g le o f 180 de g re e s (electrically). E nsu re this c o n d itio n w ill n o t a ffe c t th e s a fe ty o f the a p p lic a tio n w hen u s in g the Safe
D is a b le function. F a ilu re to c o m p ly w ill re s u lt in de a th o r s e rio u s injury.
DANGER!
E le c tric a l S h o c k H azard. The S afe D is a b le fu n ctio n can s w itch o ff the drive output, b u t do es n o t cu t th e d riv e p o w e r s u p p ly
a n d c a n n o t e le c tric a lly is o la te th e drive o u tp u t from the input. A lw a y s s h u t o ff the drive p o w e r s u p p ly w h en performing^ m a in te n a n c e o r
in s ta lla tio n s on the d riv e in p u t side as w e ll as the drive o u tp u t side. F ailure to c o m p ly w ill re s u lt in de a th o r s eriou s injury.
W ARNING!
S ud de n M o v e m e n t Hazard. W hen u s in g the S afe D is a b le inputs, m a k e sure to re m o v e the w ire lin k s b e tw e e n term in als
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 ilin g to do so w ill k e e p the S afe D isable c irc u it from o p e ra tin g p ro p e rly a n d can
ca u se in ju ry o r eve n death.
W ARNING!
A ll s a fe ty fe a tu re s (in c lu d in g S afe D isable) s h o u ld b e in s p e c te d d a ily a n d p e rio dica lly. I f the system is n o t op e ra tin g
norm ally, th e re is a ris k o f s e rio u s p e rs o n a l injury.
W ARNING!
O n ly a q u a lifie d te c h n ic ia n with a th o ro u g h u n d e rs ta n d in g o f the drive, th e in s tru c tio n m an ua l, a n d s a fe ty sta n d a rd s s ho uld
b e p e rm itte d to wire, inspect, a n d m a in ta in the S afe D is a b le input. F ailure to c o m p ly m a y re s u lt in s e rio u s in ju ry o r death.
N O TICE:
F rom the m o m e n t te rm in a l in p u ts H1 a n d H 2 h a v e opened, it take s up to 1 m s fo r d rive o u tp u t to s h u t o ff com pletely. The
se q u e n c e s e t up to trig g e r te rm in a ls H1 a n d H 2 s h o u ld m a k e sure th a t b o th te rm in a ls re m a in o p e n 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 s u lt in the S afe D is a b le In p u t n o t activating.
N O TICE:
The S afe D is a b le M o n ito r (o u tp u t te rm in a ls D M + a n d D M -) s h 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 tha n to m o n ito r the
S afe D is a b le status o r to d is c o v e r a m a lfu n c tio n in the S afe D is a b le 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.
N O TICE:
W hen u tiliz in g the S afe D is a b le function, use o n 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
The Safe Disable circuit consists o f two independent input channels that can block the output transistors (terminals H1
and H2). The input can either use the drive internal power supply or an external power supply. Use jumper S3 on the
terminal board to select between Sink or Source mode with either internal or external power supply.
A photocoupler output is available to monitor the status o f the Safe Disable terminals.
Refer to Output Terminals on
page 63
for signal specifications when using this output.
Additionally a Safe Disable monitor function can be assigned to one of the digital outputs (H2-DD = 58).
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YASKAWA ELECTRIC SIEP C710616 33D YASKAWA AC Drive L1000A Technical Manual