Lenze E94AYFLF Digital frequency module - Manual (Page 15)

EDS94AYFLF EN 3.2 - 10/2010
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15
Digital frequency extension module | Parameter setting & configuration
Digital frequency input
Parameter setting
Monitoring of the "Enable" or "Lamp control" signal
If the +5 V encoder voltage is not controlled by the digital frequency extension module, a
digital signal can be read in and monitored via pin 8 of the digital frequency input X9, e.g.
the "Lamp control" signal of an encoder or the "Enable" signal of an upstream digital
frequency module.
 If pin 8 of the digital frequency input X9 is not set to HIGH level (+5V) after the
initialisation time has elapsed, a fault message is generated and the response set in
C13041 / C14041 is executed.
 The binary status of pin 8 is also displayed at the output DFIN_bSense of the system
block LS_DigitalFrequencyInput .
Track monitoring (open circuit detection)
The signal tracks A, B, and Z are monitored with regard to their differential voltage value.
 For the activation of track monitoring, two modes are available in C13014 / C14014 :
 Monitoring is both done at standstill and while the encoder is rotating.
 If track monitoring responds, a fault message is generated and the response set in
C13040 / C14040 is executed.
– At the same time the corresponding output DFIN_bTrackAError, DFIN_bTrackBError
or DFIN_bTrackZError of the system block LS_DigitalFrequencyInput is set to TRUE.
C13014 / C14014 = "1" C13014 / C14014 = "2"
The track monitoring modes are activated after the
initialisation time has elapsed.
• The initialisation time is set in C13013 / C14013 .
The track monitoring modes only become active if pin 8
of the digital frequency input X9 is set to HIGH level
(+5 V).
• They may be activated e.g. by an encoder (status
"Lamp control") or an upstream digital frequency
module (status "Enable").
• When this mode is selected, monitoring can be
switched active by a signal source if the levels on the
tracks have valid values.