BBH SMX 12-2 - 6.4 Reaction times when using SMX 31 x;32 x

Installation manual
HB-37350-810-01-51F-EN SMX Installation manual.docx Page 182 of 234
Version: 50F
With overspeed distance the following connections result for the course of V and s.
Parameters
Calculation methods
Comment
t
Response
Value for response time data SMX +
deceleration time in external shut-down
chain
Deceleration time in external shut-off
chain derived from relay/contactor
and brake data, etc. issued by the
manufacturer
a
F
, a
V
n.a.
Estimation of the application
V
a2
= a
F
* t
Response
+ (V
S
2
+ 2 * a
F
* XF)
1/2
With its effect the filter displaces the set speed threshold V
a
upwards by the amount
delta_v_filter. For the application one must consider the new response time values
(Treact = Tsmx + Tfilter), as well as the speed at shut-down by SMX resulting from this.
6.4 Reaction times when using SMX 31x/32x
The cycle time of the SMX system serves as basis for calculating the response times. In
operation this is T_zyklus = 8 ms. The specified response times comply with the corresponding
maximum running time for the actual application within the SMX module. Depending on the
application, further, application dependent response times of the sensors and actuators used
must be added, in order to obtain the total running time.
Function
Designatio
n
Response
time [ms]
Explanation
Worst Case deceleration time inlet
in basic module to PAE
T
IN_BASE
10
e.g. activation of a monitoring function
by an input signal in the basic module
Worst Case deceleration time input
SMX31 to PAE in basic module
T
IN_31
18
e.g. activation of a monitoring function by an
input signal in the extension module
SMX31
Processing time PAE to PAA in
basic module
T
PLC
8
Shut-down by a monitoring function or an
input in PAE
Activation / deactivation digital
output in basic module from PAA
T
OUT_BASE
-
Activation or deactivation of an output in
the basic module after changes to the
PAA.
Activation / deactivation digital
output in extension module via
PAA in basic module
T
OUT_31
8
Activation or deactivation of an output in
the extension module SMX31 after
changes to the PAA in the basic module.