8. Program the fieldbus parameter
Fieldbus Timeout to 100 ms and the parameter Timeout
Response to Rapid Stop as set out in the Objective.
9.
Now enter all parameters specific to the drive, such as motor parameters, frequency
characteristics, etc. (see MOVITRAC
®
31.. Installation and Operating Instructions).
10. Enter the rapid stop ramp. As the first parameter set and the first ramp generator set of it are to
be used, you must change the parameter
T13 Stop Ramp.
All the parameters for this application example have now been assigned.
The fieldbus-independent emergency stop function is implemented by connecting the enable terminal
directly with the emergency stop. In normal mode, the emergency stop switch is closed, so that
terminal 43 has a +24 V signal level and the inverter is enabled (together with the jumper at terminals
41-44). The drive is now controlled by the fieldbus by means of the control word.
In an emergency stop situation the emergency stop button is activated, terminal 43 receives a 0V
signal level and thus activates the rapid stop. The drive will now come to a standstill within 200 ms
(configured rapid stop ramp), although the fieldbus is transmitting a different control command via
the control word.
IMPORTANT
In this application example, the assignment of the terminals has not been changed from that of the
factory setting. The inverter is enabled on the terminal side by means of the jumper and the +24 V
signal at terminal 43 (Enable). The effect of this is that the drive is accelerated immediately after the
factory setting has been activated and when the mains voltage is switched on, as the parameter
P841
Control Mode = Standard is activated after a factory setting has been carried out. So make sure that
the drive is designed in such a way that only the 24 V supply is switched on after the factory setting
has been activated. Do not switch on the mains voltage until the fieldbus control mode (
P841 Control
Mode = Fieldbus) has been activated, as the inverter is then controlled by the control word.
572 RAPID STOP
TIME OUT RESPONSE
571 0.10 s
FIELDBUS TIME OUT
00345ADE
Fig. 48: Programming the fieldbus timeout and timeout response from the keypad
140 T13 0.20 s
STOP RAMP
00353AEN
Fig. 49: Programming the ramp generators used by the application program
Application Examples
7
64
MOVITRAC
®
31.. Fieldbus Unit Profile
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]
