Lenze ECSCSxxx - Manual (Page 336)

Function library
Speed (speed control)
Setting of motor control
12
l
336 EDBCSXS064 EN 4.0
12.27.3.5 Torque control with speed limitation
If SPEED−MCTRL.NMSwt = TRUE (C7411/11), this function is activated. For the speed
limitation, a second speed controller (auxiliary speed controller) is connected.
SPEED−MCTRL.MAdd (C7431/5) operates as a bipolar torque setpoint. "torque control with
speed limitation"#
ƒ The speed controller 1 is used to make up the upper speed limit.
– The upper speed limit is defined at SPEED−NSET.NSet (C7431/8) in [%] by N
max
(positive sign for CW rotation).
ƒ The speed controller 2 (auxiliary speed controller) is used to make up the lower
speed limit.
– The lower speed limit is defined at SPEED−MCTRL.NStartMLim (C7431/13) in [%] by
N
max
(negative sign for CCW rotation).
ƒ N
max
is selected via C0011.
(
Stop!
The upper speed limit is only to be used for CW rotation (positive values) and
the lower speed limit only for CCW rotation (negative values); Otherwise the
drive may accelerate in an uncontrolled way.
)
Note!
The value at SPEED−MCTRL.NegLoMLim (C7431/3) is negated in the "Speed"
function block.