Lenze EVF9333−xV - Manual (Page 301)

Configuration
Function blocks
Internal motor control with V/f characteristic control (MCTRL1)
8
8.2
8.2.6
l
8.2−39 EDSVF9333V EN 6.2−04/2012
Flying restart circuit without protection against unexpected start−up
(C0142 = 3):
0
1
2
3
4
 ‚ ƒ „
9300vec088
Fig. 8.2−17 Signal characteristic for automatic start with flying restart circuit (C0142 = 3)
0 Speed setpoint (e.g. AIN−OUT)
1 Actual speed value
2 Fault (e.g. DCTRL−FAIL = HIGH)
3 Pulse inhibit (e.g. DCTRL−IMP = HIGH)
4 Enable controller (e.g. X5/28 = HIGH)
 The motor rotates with setpoint
‚ A fault (e.g. mains failure, TRIP SET) activates a pulse inhibit c. The motor
coasts. After eliminating the fault (e.g. mains recovery, TRIP RESET) the pulse
inhibit is deactivated.
ƒ The flying restart circuit is active now and calculates the current motor
speed. If, after an OU message, the pulse inhibit is deactivated again, the
flying restart circuit is not started.
„ The motor is accelerated along the set acceleration ramp to the speed
setpoint and is being kept there