KEYENCE SK-1000 Series - Manual (Page 14)

14 E SK-1000 IM
„ Auto absolute value hold
Until the hold-reset input is turned ON, the maximum absolute value of the
measured value is held as the judgment value (P.V.). External input is not
necessary.
7. Timing input
Set the external input (timing input) operation used for "6. Hold Function" (page
12).
If "Auto peak hold," "Auto bottom hold," or "Auto absolute value hold" is set, this
item is skipped.
For details, refer to the "6. Hold Function" (page 12).
8. Hysteresis
Set the hysteresis for the tolerance setting value.
If the judgment value (P.V.) fluctuates close to the tolerance setting value, causing
the judgment output to repeatedly turn ON and OFF, increase the hysteresis value
to stabilize the judgment output.
Reference
Above is the timing chart for when the judgment output state is
Normally Open (default value). ON/OFF is reversed for Normally Close.
9. Analog output scaling
The analog output scaling for the judgment value (P.V.) is set.
If the analog output is set to no output, this screen is skipped.
"Operation When the Power is Turned on for the First Time" (page 7)
"Initial Reset (Initialize)" (page 8)
Reference
If Upper limit = Lower limit is set, the analog output is as follows:
Judgment value (P.V.) < Upper limit: Analog output lower limit (1V in
the case of 1V to 5V output range)
Judgment value (P.V.) > Upper limit: Analog output upper limit (5V in
the case of 1V to 5V output range)
Item Description
Default
value
Timing input LeveL (Level), edGe (Edge) LEvEL
Item Description
Default
value
Hysteresis 0.000 to 99.999 0.100
Analog output scaling Description
Default
value
Default setting
Scaling is not performed. c
Free range Scaling is performed. The analog output range can
be changed by specifying the upper limit and lower
limit of the judgment value (P.V.).
Example 1: Lower limit < Upper limit
(Analog output 1 to 5 V)
Example 2: Lower limit > Upper limit
(Analog output 1 to 5 V)
Auto.A
Auto-absolute value-hold value
Measurement value
0
a
a
b
b
c
c
Display value
Time
Timing Input ON
OFF
Reset input
ON
OFF
7. tiM
8. HYS
Time
Hysteresis
Hysteresis
Judgment value (P.V.)
HI side setting value
LO side setting value
ON
OFF
ON
OFF
ON
OFF
HI judgment output
GO judgment output
LO judgment output
9. AnG
dEFLt
Free
Lower limit Upper limit
5
1
Output upper
limit
Output lower
limit
Judgment
value
(P.V.)
(V) (V)
5
1
Lower limit Upper limit
Judgment
value
(P.V.)
Output upper
limit
Output lower
limit
z Relation of voltage and analog output in default state (dEFLt)
The upper and lower limits for the different selections of analog outputs are as
follows.
„ Upper limit setting screen and lower limit setting screen
When set to the default state [dEFLt], the following screens will be skipped.
When set to free range, the upper limit setting and lower limit setting screens will
appear.
z For free range (FrEE)
Press S / T button on each setting screen to specify the upper limit and the lower
limit.
z Setting range for analog output scaling
If free range is selected for the analog output scaling state, the upper limit and
lower limit can be set within the range shown below.
Analog Output Accuracy
The analog output can be selected from ± 5 V, 1 to 5 V, 0 to 5 V or 4 to 20 mA.
*1 The averaging is as follows for averaging greater than 1024 times:
1024 times: Sampling rate x 4
2048 times: Sampling rate x 8
4096 times: Sampling rate x 16
Measurement range Upper limit Lower limit
NEAR 5.000 -5.000
FAR 50.000 -50.000
Analog setting Output upper limit Output lower limit
OFF Not output
0-5v 5 V 0 V
-5-5v 5 V -5 V
1-5v 5 V 1 V
AMPr 20 mA 4 mA
Measurement range Description Default value
Upper limit -99.999 to 99.999 10.000
Lower limit -99.999 to 99.999 -10.000
Voltage output Current output
Output range
± 5 V
(Full scale 10 V) 4 to 20 mA
(Full scale 16 mA)
Output resistance 100 Ω -
Maximum load resistance - 350 Ω
Repeatability ± 1 mV ± 1.5 μA
Accuracy in respect to display ± 0.05% of F.S. ± 0.25% of F.S.
Temperature characteristics ± 0.005% of F.S./°C ± 0.01% of F.S./°C
Refresh rate *1 Same as sensor head sampling rate
HOLD
HI
V kV ALARM
BANK
ZERO SHIFT
TIMING
TEMP %RH
HI LO R.V.
0 1 2 3
LO GO
HOLD
HI
V kV ALARM
BANK
ZERO SHIFT
TIMING
TEMP %RH
HI LO R.V.
0 1 2 3
LO GO
HOLD
HI
V kV ALARM
BANK
ZERO SHIFT
TIMING
TEMP %RH
HI LO R.V.
0 1 2 3
LO GO
HOLD
HI
V kV ALARM
BANK
ZERO SHIFT
TIMING
TEMP %RH
HI LO R.V.
0 1 2 3
LO GO
9. Analog Output
Scaling
Upper-limit setting
screen
Lower-limit setting
screen
[MODE]
or X
10.External Input
[MODE]
or X
[MODE]
or X