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|  DSH 4066 f: J: }5 h2 ^& \ `( |9 X; S
3 W8 C) D+ {: [7 |/ C- F3 M | The adequacy of the knob/shaft mechanical link( B/ w6 h; S9 u$ L7 D; Z; R
| 56.10 b)! J9 w0 u' b% W6 r* `6 @
| 60601-1(ed.2);am1;am2
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, {$ O& L1 A5 iStandard(s)- (year and edition):- S' u0 _; @: i# @# t1 i, q
IEC 60601-1:1988 Ed.2 Am1+Am2# J8 D9 E6 \6 @2 w7 @5 x
Sub clause(s): 56.10 b)
7 n! a0 ]$ t+ i9 m# m* z* G4 v5 uSheet n°: DSH-4066 h, I; C" J' r5 u
Subject: The adequacy of the knob/shaft mechanical link
0 _* j- b! |) ~Key words: Knob, torque7 d$ h2 @- i% ~, t+ ^; {$ _
Confirmed by CTL at its 39th meeting, in Cologne
+ n/ J* }% _# N0 f" W' ~Question:/ t' G8 w( C2 b% y) j. a! Q; X
a) The criteria is that the knob shall not rotate with respect to the shaft. This does not cover the1 P7 ?& O/ m8 _- K: f/ l
possibility of internal damage to the controlling device e.g. potentiometer.+ I' w8 a; U4 R% h
b) The torque test values are too high. Maximum torque on a 10mm diameter knob was found
- z: d6 V9 f2 P! G4 x8 cto be <0.5Nm.
! s: D4 L4 w4 z) v5 P' MDecision:
; J3 ], h4 R N7 R4 {0 \' BThe torque test values in Table XIII are not excessive. This table could be re-examined in the
) A0 v$ j+ z: B1 M6 R3rd edition of IEC 60601-1.
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发表于 2012-11-5 11:40
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