IFM Electronic CR0403 Programming Manual page 55

ifm Programming Manual ecomatmobile
Configurations
>
PWM outputs
The following operating modes are possible for the device outputs (→ data sheet):
• PWM output, plus switching (BH) without diagnostic function
Basic circuit of binary output plus switching (BH)
for positive output signal
WARNING
Property damage or bodily injury possible due to malfunctions!
For outputs in PWM mode:
• there are no diagnostic functions
• the overload protection OUT_OVERLOAD_PROTECTION is NOT active
NOTE
PWM outputs must NOT be operated in parallel, e.g. in order to increase the max. output current. The
outputs do not operate synchronously.
Otherwise the entire load current could flow through only one output. The current measurement would
no longer function.
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Availability of PWM
Device
BasicController: CR0403
>
FBs for PWM functions
The following function blocks are available for the PWM function of the outputs:
CURRENT_CONTROL (→ page 178)
PWM1000 (→ page 182)
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Current control with PWM (= PWMi)
Current measurement of the coil current can be carried out via the current measurement channels
integrated in the controller. This way, the current can for example be re-adjusted if the coil heats up.
The hydraulic conditions in the system are maintained.
In principle, the current-controlled outputs are protected against short circuit.
BasicController (CR0403) Runtime System V03.02
Qn = pin output n
(L) = load
Current controller for a PWMi output channel
Initialises and configures a PWM-capable output channel
the mark-to-space ratio can be indicated in steps of 1 ‰
Function configuration of the inputs and outputs
Number of available of which current-
PWM outputs controlled (PWMi)
12
55
2015-04-01
PWM frequency
[Hz]
2 20...250
14705
15451
15414
9980
15577
14718
14722