9-11
9-2-4 Scaling Meter
H K3MA-J
The Scaling Meter is connected to the
multi-function analog output of the Inverter so that
the Scaling Meter will display the rpm and speed
values of the machines and lines in actual units.
H Applicable Models
Input type Output type
Power supply voltage
100 to 240 V AC (50/60 Hz) 24 V AC (50/60 Hz), 24 V
DC
DC voltage/ current inputs
None K3MA-J:
100 to 240 V AC
K3MA-J: 24 V AC/DC
Relay: 2SPST-NO K3MA-J-A2, 100 to 240 V AC K3MA-J-A2: 24 V AC/DC
H Standard Specifications
Input signals DC voltage/current (0 to 20 mA, 4 to 20 mA, 0 to 5 V, 1 to 5 V, ±10 V)
A/D conversion Double integral method
Input impedance Current input: 45 Ω max;
voltage input: 1 MΩ min.
Sampling period 250 ms
Display refresh
period
Sampling period (with average value processing:
Sample period x No. of averages)
Max. displayed
digits
5 (–19,999 to 99,999)
Display type 7-segment digital display
Sign display Minus sign (–) displayed automatically for negative input signals.
Zero suppression
(leftmost digits)
Supported
Scaling Programmed (The displayed range corresponds to the maximum number of displayed digits.)
The decimal point position can be set as required.
Hold functions Maximum value hold, minimum value hold
Comparative output
hysteresis
Programmed with front-panel keys (0001 to 9999)
Other functions Forced–zero by front-panel keys, zero reset, scaling teaching, display color switching (green [red],
green, red [green], red), comparative output switching (upper limit, lower limit, upper/lower limits),
average value processing (simple averaging: OFF, 2, 4, or 8 times)
Output form Relay: DPST-NO
Comparative output
response time
750 ms max.
Enclosure ratings Front panel: NEMA4X for indoor use (equivalent to IP66), Rear case: IP20
Terminals: IP00 + finger protection (VDE0106/100)
Memory protection Nonvolatile memory (100,000 overwrites)
Specifications
Chapter 9
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