Siemens LOGO! 230RC User Manual

113
LOGO! Manual
A5E00067781 01
4.4.16 Frequency Trigger
Brief description
The output is switched on or off depending on whether the
frequency at the input is between two definable limits.
Symbol in
LOGO!
Connection Description
Input Cnt At the Cnt input you apply
the input that supplies the
pulses to be counted.
Use
 Inputs I5/I6 or I11/I12
(LOGO!...L) for rapid
counts (not
LOGO!230..., 24RC,
24RCo):
max. 1 kHz.
 Any other input or circuit
component for lower fre-
quencies.
Parameter Par:
SW, SW
G_T
SW: on threshold
SW: off threshold
G_T: time period over which
the signal pulses applied
are counted.
Output Q Q switches on or off de-
pending on SW and SW.
Timing diagram
Q
SW = 5
fa = 6 fa = 10 fa = 8 fa = 5
G_T
fre
SW = 9
LOGO! Functions

Siemens LOGO! 230RC Specifications

General

Inputs	8 digital inputs
Outputs	4 relay outputs
Mounting Type	DIN rail
Protection Type	IP20
Dimensions	90 x 72 x 55 mm
Output Current	10 A
Operating Temperature	0°C to 55°C
Power Supply	115/230V AC
Storage Temperature	-40°C to +70°C