Subject to changes without notice !
Änderungen vorbehalten !
Gearless Lift Machine
WSG-SF
Operating Instructions
EN
Code: GM.8.004284.EN
Date:
28. Jan 2020
Version: 0.16
Page: 55
Annex to the EC Type-Examination Certificate
No. EU-BD 1034 of 2017-09-11
Note:
The English text is a translation of the German original. In case of any discrepancy, the German version is valid only.
Page 1 of 2
1
Scope of application
1.1
Use as braking device
–
part of the the protection device against overspeed for the car mov-
ing in upwards direction
–
permissible brake torques and tripping rotary speeds
1.1.1
Permissible brake torque when the braking device acts on the shaft of the traction sheave while the
car is moving upwards
Nominal brake torque [Nm]
Maximum tripping rotary speed of the traction sheave
[rpm]
560 - 900
900
1.1.2
Maximum tripping speed of the overspeed governor and maximum rated speed of the lift
The maximum tripping speed of the overspeed governor and the maximum rated speed of the lift
must be calculated on the
basis of the traction sheave’s
maximum tripping rotary speed as outlined
above taking into account traction sheave diameter and car suspension.
v =
D
TS
x
π
x n
60 x i
v
= Tripping (rated) speed (m/s)
D
TS
=
Diameter of the traction sheave from rope’s center to rope’s center (m)
π
= 3,14
n
= Rotary speed (rpm)
i
= Ratio of the car suspension
1.2
Use as braking element
–
part of the protection device against unintended car movement (act-
ing in up and down direction)
–
permissible brake torques, tripping rotary speeds and charac-
teristics
1.2.1
Nominal brake torques and response times with relation to a brand-new brake element
Minimum brake
torque* [Nm]
Maximum brake
torque* [Nm]
Maximum tripping
rotary speed [rpm]
Maximum response times**
[ms]
without / with overexcitation
t
10
t
50
t
90
2 x 280 = 560
900
79 / 87
123 / 131 167 / 175
2 x 450 = 900
42 / 49
70 / 77
99 / 105
Explanations:
* Nominal brake torque:
Brake torque assured for installation operation by the safety component manufacturer.
** Response times:
t
X
time difference between the drop of the braking power until establishing X% of the
nominal brake torque, t
50
optionally calculated t
50
= (t
10
+ t
90
)/2 or value taken from the
examination recording
1.2.2 Assigned execution features
Type of powering / deactivation
continuous current / continuous current end
Brake control
serial / parallel
Nominal air gap
0.45 mm
Damping elements
YES
Overexcitation
2-fold non-release voltage
Summary of Contents for WSG-SF Series
Page 111: ......
