SINUS PENTA
PROGRAMMING GUIDE
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Operating modes set in MDO1 (2,3,4) Digital Output: P270, (P279, P288, P297)
The user can select one of the following operating modes:
Table 47: Digital Output Mode
DISABLE
The selected digital output is disabled.
DIGITAL
The digital output depends on a selected digital signal and on the logic output
function (True/False).
See Examples 1 and 2.
DOUBLE DIGITAL
The digital output depends on 2 selected digital signals, on the logic function
calculating the output value and on the logic output function (True/False).
ANALOG
The digital output depends on a selected analog variable, which is tested through
Test A obtaining one digital signal; starting from its value, the selected logic function
calculates the True/False end value.
See Example 3.
DOUBLE ANALOG
The digital outputs depends on 2 selected analog variables: Test A is performed for
variable A, whilst Test B is performed for variable B, thus obtaining 2 digital signals;
starting from their value, the selected logic function calculates the output value,
whereas the logic output function True/False calculates the end value.
DOUBLE FULL
As DOUBLE ANALOG or DOUBLE DIGITAL mode, but both digital signals and
analog variables can be selected.
If you select a digital signal, its value (TRUE or FALSE) is used to calculate the
selected logic function.
If you select an analog variable, the test selected for this variable is performed, and
its result (TRUE or FALSE) is used to calculate the selected logic function.
BRAKE (*)
As ABS BRAKE below, although the selected variables are not expressed as
absolute values, but depend on the selected tests.
ABS BRAKE (*)
The ABS BRAKE mode allows controlling the electromechanical brake of a motor
used for lifting applications. The ABS BRAKE mode is applied by selecting the
measured (or estimated) speed value [A71] as the first variable, and the output
torque [A81] as the second variable.
Variables are considered as absolute values.
See Example 4.
ABS LIFT (*)
As ABS BRAKE, but the brake unlocks (digital output open) when a given torque
value is attained, which is automatically determined based on the last torque value
required in the previous stroke.
PWM MODE
The PWM mode may be selected for digital outputs MDO1 and MDO2 only (it cannot
be selected for relay digital outputs MDO3 and MDO4).
The digital output becomes a low-frequency PWM output with a duty–cycle
proportional to the value of the selected analog output.
See Example 5.
(*)
The activation and deactivation of the outputs programmed as
BRAKE
,
ABS BRAKE
and
ABS LIFT
is affected also
by other conditions depending on the drive status. Namely:
Activation
Conditions to be considered in logic AND with the following programmed functions:
•
Drive accelerating and (AND) with absolute value speed >1 rpm or (OR) drive in pretensioning
stage (see BRIDGE CRANE MENU).
•
Drive running, no alarm triggered
Deactivation
Conditions to be considered in logic OR with the following programmed functions:
•
Drive not running or locked due to an alarm condition
•
Drive in tracking error mode (see ENCODER/FREQUENCY INPUTS MENU), unless parameter
C303
is set to NO (see BRIDGE CRANE MENU).
CAUTION
The digital outputs programmed as
BRAKE
,
ABS BRAKE
or
ABS LIFT
are inactive in a
drive configured in slave mode (torque control).
In a master/slave system, both electromechanical brakes must be controlled by the
master.
