Kendrion Binder Magnete GmbH
Operating Instructions 76 ..P..B00
Last updated: 30 Dec. 2009
Page 29
Size
10
11
13
16
19
24
Max. rated voltage
[VAC]
250
Rated current (cos
ϕ
=1.0) [A]
2.5
Rated current (cos
ϕ
=0.6) [A]
1.5
Service life (switching operations)
5000
Contact type
normally closed
Nominal temperature (switching temperature)
thermoswitch 11 (flange (3))
[°C]
140
140
140
140
148
148
Nominal temperature (switching temperature)
thermoswitch 12 (coil (1.2))
[°C]
118
118
100
100
109
109
Min. current
[mA]
50
Switching temperature change
as a function of the current load
[K]
-2.5 at 1.5 A
-8.0 at 2.5 A
Table 29/2: Thermoswitch specifications
Explanations on the technical specifications:
W
max
(maximum switching work) is the switching work
that must not be exceeded during braking operations at
max. 1500
rpm. Braking operations at >1500 rpm
substantially reduce the maximum permitted switching
work per switching operation. Such operation is only
allowed after prior consultation with the manufacturer.
The maximum switching power P
max
is the switching
work W that can be converted by the brake per hour. In
case of applications where the number of switching
operations per hour is Z>1, Fig. 29/1 (W
max
as a function
of the number of switching operations per hour Z)
applies. The P
max
and W
max
values are approximate
values; they apply to applications where the brake is
mounted between the B-face end shield of the motor and
the motor fan or attached to the motor. The specified
times apply to the following conditions: DC side
(separate) brake switching, operating temperature, rated
voltage, and rated air gap. All values are mean values
that are subject to variation. In case of AC side brake
switching, the coupling time t
1
is substantially longer. The
specified rated torques M
2
characterise the torque level
of the brakes. Depending on the application the brake is
used for, the switching torque M
1
and the transmissible
torque M
4
may differ from the specified M
2
values. The
switching torque M
1
depends on the speed (rpm). If the
friction surfaces are contaminated with oil or grease the
transmissible torque M
4
and the switching torque M
1
may
drop. The technical specifications apply after the break-in
process has been completed (see Table 30/1). Vertical
brake operation is only allowed after prior consultation
with the manufacturer.
10
100
1000
10000
100000
1
10
100
1000
10000
h
-1
J
W
max .
Gr. 24/19
Gr. 16/13
Gr. 11/10
Z
Fig. 29/1: Max. switching work W
max
per
switching operation as a function of the
number of switching operations per hour Z
(values based on n=1500 rpm)
Size 24/19
Size 16/13
Size 11/10
