Lenze EVS 9300 series - Page 276

Function library
Function blocks
9.2.41 Mains failure control (MFAIL)
9-150
L
EDSVS9332S-D11 EN 3.0
Stop!
For internal voltage supply of the terminals (C0005 = xx1x)terminal X6/63 is used as avoltage source
for external potentiometers. In case, measure across terminals +UG, -UG.
2. Measure the DC bus voltage with an oscilloscope (channel 1)
– with a suitable voltage divider across terminals +UG, -UG. or
– by providing the DC bus voltage e.g. at terminal X6/62. For this ,set C0436 = 5005
(MCTRL-DCVOLT). 1 V at terminal X6/63 = 100 V at +UG, -UG.
3. Measure the speed with an oscilloscope (channel 2)
– by supplying the speed on terminal X6/62 for instance (standard setting). For this, set C0431
= 5001 (MCTRL-NACT). 10 V at terminal X6/62 = nmax (C0011).
4. Provide the threshold for the mains failure detection in C0472/20. The provision depends on
the setting in C0173.
– Set the threshold approx. 50 V above the threshold LU (example for C0173 = 0.1; C0472/20
=48%≙ 480 V).
FB_mfail_7
M
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C
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7
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Message LU Message OU
M
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age range
C
0
1
7
3
   
< 400 V 0 285 V 430 V 755 V 770 V
400 V 1 285 V 430 V 755 V 770 V
400 V ... 460 V 2 328 V 473 V 755 V 770 V
480 V without brake chopper 3 342 V 487 V 755 V 770 V
Operation with brake chopper (up to 480 V) 4 342 V 487 V 785 V 800 V
DC-bus voltage (U
ZK
)