Lenze E94AYFLF Digital frequency module Manual de usuario descargar pdf (Pagina 14)

Digital frequency extension module | Parameter setting & configuration

Digital frequency input

Parameter setting

14 L EDS94AYFLF EN 3.2 - 10/2010

2.2.5 Voltage control - TTL encoder

If a TTL encoder is connected as the signal source and C13010

/ C14010 is set to TTL

encoder, the encoder can be supplied with a controlled +5 V voltage via pin 4, which serves

to compensate the voltage drop on the encoder cable.

2.2.6 Monitoring

Initialisation time

In C13013

/ C14013 an initialisation time can be set, which must elapse after starting the

system before the monitoring modes are switched active.

 Thanks to this "delay" other system parts which serve as signal sources, can initialise

themselves first without monitoring being triggered due to missing signals.

 In the "0" setting the initialisation time is set to infinity so that monitoring is

deactivated permanently.

 If the setting is changed from "0" to another value, the initialisation time is restarted.

– A higher-level control can, for instance, switch monitoring active by a corresponding

parameter setting of C13013

/ C14013 even if the device has been switched on for a

long time.

Monitoring of the +5 V voltage for the encoder

If an encoder is connected to X9 and supplied by the digital frequency extension module

"in a controlled way", the pin 8 of the digital frequency input X9 serves to control and

monitor the +5 V encoder voltage.

 If the voltage control is not able to compensate the voltage drop, a fault message is

created and the response set in C13042

/ C14042 is executed.

– At the same time the output DFIN_bVccCtrlLimited of the system block

LS_DigitalFrequencyInput is set to TRUE.

 Stop!

If an encoder is connected to X9 and supplied by the digital frequency extension

module "in a controlled way", the pin 8 of the digital frequency input X9 serves

to control and monitor the +5 V encoder voltage. Monitoring

In this case, no digital signal ("Lamp control" or "Enable") may be supplied to PIN

Please also observe the documentation for the encoder used.

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Lenze E94AYFLF Digital frequency module Manual de usuario Pagina 14