F 5220 (0625)
268
Function table
Alternatively to the proximity switch a resistor-wired sensor can be used:
Figure 3: Resistor-wired sensor
Operating modes
• Pulse counting
• Gate time measuring
• Cycle independent output switching with comparison operation
• Recognition of rotation direction
Pulse counting
The module is counting up the incoming pulses. The resolution of the counter on the module
is 24 bit. The value provided by the function block HF-CNT-3 for the user program is from type
DINT. The counting range of the variable is 0...16,777,215. The value of the variable can be
reset via the function block. The counter starts again with 0 at overflow.
Proximity Switch Inputs Signal Status
I
E
= 0.35...2.1 mA
FALSE OK
I
E
= 2.9...4.5 mA
TRUE OK
I
E
> 5.1 mA FALSE short-circuit
I
E
< 0.2 mA FALSE line break
Notes • The input configuration with safety-related proximity switches, e.g
P&F (... SN), contains a monitoring of the lines for short-circuit and
line break.
• When safety-related proximity switches are used, please refer to the
specifications and notes of the manufacturers.
• When non-safety-related proximity switches according to
DIN EN 60947-5-6 are used, external 390
Ω (0.25 W) resistors con-
nected in series must be used.
• When operating in a redundant mode with proximity switches, in one
of the two cable plugs the shunts must be removed.
• Direction inputs (proximity switches) which are not used must be ter-
minated by a 6 k
Ω resistor.
10k
1k
1)
1) use either connection X10 (X12,
X14, X16) in the cable plug (resistor
390
Ω existent) or separate 390 Ω
resistor connected in series
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