Description of the Software Modules and Parameters
Parameter manual b maXX BM5800
Document No.: 5.16029.03
617
of 814
3
145.5 Speed limit master axis
Display of maximum editable speed (= Position Change) at the transmission input (mas-
ter axis) to prevent overrun at the transmission output (slave axis). The value is calculated
based on the current transmission factors.
If the set value of the master axis exceeds this value, a error will be issued and the sub-
sequent drive will be blocked. Monitoring may occur with an incorrect setting of the trans-
mission factor or a faulty set value of the master axis. Normally, these high speeds cannot
occur.
The maximum possible value (= 2147483647 Inc/T
ab
) is displayed at the transmission in-
put for |Z145.3– Rot. slave axis| < Z145.4– Rot. master axis.
The sampling time T
ab
in the unit of Parameter Z145.5– corresponds with the effective
position controller cycle (refer to Z1.8– RT0 cycle time).
Example:
Position controller cycle = 250 µs Inc/T
ab
= Inc/
250µs
Z145.3– revolution of the slave axis = -55555
Z145.4– revolution of the master axis = 1000
Z145.5– Speed limit
= (2
31
-1) * Rot. master axis / |Rot. slave axis|
= 2147483647 * 1000 / 55555
= 38655092 Inc/
250µs
The result converted to a rotative speed:
Speed limit = 38655092 * 4 Inc/ms = 1546220368 Inc/ms
= 1546220368 * 60000 / 2
32
rpm
2160 rpm
145.6 Synchronization velocity window
This parameter is used to set the monitoring window for the speed synchronicity. The
Synchronization Velocity window is symmetrically arranged around the speed set value
of the master axis.
If the speed actual value of the slave drive is outside of this window under consideration
of the electric transmission, bit 9 "Slave axis outside of synchronization velocity window"
will be set in the
Z145.1– status. If the speed actual value of the slave axis enters the
monitoring window again, bit 9 will be deleted again.
Monitoring is not activated until speed synchronization is completed (Z145.1– Status
bit 8 = 0).
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