Lenze DDS Function library 9300 Servo - Manual (Page 18)

Function block library Lenze9300Servo.lib
Special functions
2.1.2 Supply−failure control (L_MFAIL)
2−8
L
Lenze9300Servo.lib EN 1.1
Supply−failure detection of the supply module
·
A digital output of the supply module 934x is switched to the function block L_MFAIL via the
digital inputs DIGIN of the 93XX controller. In the example, input X5/E4 is used.
bIReset_b
bStatus_b
nNout_a
nSet_a
nAct_a
nThreshold_a
bReset_b
bFault_b
nNSet_a
nDcSet_a
nConst_a
nAdapt_a
L_MFAIL
L_MFAIL1
DIGIN_bIn5_b
Abb. 2−8 Example of a supply−failure detection by an external monitoring system
Programming the example in Abb. 2−8:
1. Set the signal links according to Abb. 2−8
2. Select the input level (TRUE− or FALSE−active) for X5/E4 with C0114/4
Combination of these methods
These methods are combined via an OR link.
bIReset_b
bStatus_b
nNout_a
nSet_a
nAct_a
nThreshold_a
bReset_b
bFault_b
nNSet_a
nDcSet_a
nConst_a
nAdapt_a
bOut_b
bOut_b
L_OR
L_CMP
L_MFAIL
L_OR5
L_CMP2
L_MFAIL1
bIn3_b
bIn2_b
bIn1_b
nIn2_a
nIn1_a
MCTRL_nDCVolt_a
FCODE_nC472_20_a
DIGIN_bIn5_b
FALSE
Abb. 2−9 Example of a supply−failure detected by different sources
Programming the example in Abb. 2−9:
1. Set the signal links according to Abb. 2−9
2. In FB L_CMP, set byFunction = 3 (nIn1 < nIn2)