Function block library
7-74
SHB9300CRV EN 2.0
l
CCW rotation
In CCW direction, the profiles are selected in descending order.
If the first profile is reached, the process starts again with the profile: first profile + reach. About the
example:
2->4->3->2->4etc.
Profiles 0 and 1 cannot be reached with this setting.
Reset cam profile selection
After a fault (TRIP etc.) the first profile C1311 can be activated with CDATA-RESET = HIGH.
If the cycle is to start with a certain profile, this profile must be preselected at the analog input
CDATA-SEL. Further steps
1. Set CDATA-RESET = HIGH and
2. CDATA-CYCLE = LOW then set
3. CDATA-RESET = LOW and afterwards set
4. CDATA-CYCLE = HIGH
Inhibit cam profile selection
The profile selection can be inhibited by setting CDATA-HOLD = HIGH.
Thepriorityofthis input ishigherthanthe priority of CDATA-RESET, CDATA-CYCLEand CDATA-SEL
Profile selection are inhibited for instance with round tables with target position selection (other
function blocks must be interconnected accordingly)
Cam profile with relative feed
The main characteristic of a profile like this is that one limit value is not 0. Profiles with rel. feed are
used for drives with infinite feed.
Example:
l
Round table (e.g. several feeds during one revolution)
l
Conveyor belt (feed)
This function is selected with CDATA-REL-SEL = HIGH
Set CDATA-REL-SEL = HIGH (e.g. FIXED 1).
If the input remains LOW, the last Y valueof the profile will not be stored and, depending on the cam
data, the drive might “jump” to a new value.
To Next Page
Loading...
