Siemens SIMODRIVE 611 universal - Page 345

6
6.1 Operating mode, speed/torque setpoint (P0700 = 1)
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SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
When using ”SIMODRIVE 611 universal” with a higher–level control, it
can occur that for coordinate transformation, e.g. shifting and rotating
the tool, that the software limit switches cannot be activated/evaluated
in the higher–level control.
An axis fast stop is possible using a hardware limit switch monitoring
function.
The HW limit switches must be connected to an input terminal with the
following function numbers:
 ”Plus hardware limit switch” function ––> function number 81
 ”Minus hardware limit switch” function ––> function number 82
––> Refer to Chapter 6.4.2
When traversing to a hardware limit switch, the associated input signal
is set to ”0” and the following response is automatically initiated:
 A setpoint of zero is entered in the selecting speed direction – the
axis is braked and comes to a standstill. The drive remains in the
closed–loop controlled mode.
If it is switched–in, the ramp–function generator remains active. The
braking that is initiated runs with or without braking ramp.
 One of the following warnings is output:
– Warning 800 Minus hardware limit switch
– Warning 801 Plus hardware limit switch
The hardware limit switch signal must always remain at a ”0 signal” out-
side the permitted traversing range. A brief change from ”0 signal” to ”1
signal” is not permitted.
As a result of the zero speed input when reaching the hardware limit
switch, alarms, e.g. ”following error too high” or similar faults must be
detected in the higher–level control.
If an axis is at a hardware limit switch, then it can be moved away as
follows:
 Enter a setpoint in the oppositive direction to the approach direction
or
 Withdraw the controller enable and move the drive away manually
After moving away from the hardware limit switch, warning 800 or 801
is automatically deleted.
Hardware
limit switch
(HW limit switch)
(from SW 8.1)
Traverse to a
hardware limit
switch?
How do you move
away from a
hardware limit
switch?
6 Description of the Functions
01.99
06.04