C-26
Self-powered Tachometer
H7ER
Specifications
■
General
Note: 1.
Reset is not available.
2.
When there is no input, the display will be 0.0 or 0.
3.
Separately ordered Wire-wrap Terminals (Y92S-37) are required.
4.
Only PNP/NPN Universal DC voltage input models have a backlight.
5.
“rpm”, “rps”, “s
-1
” and “min
-1
” labels are included.
■
Ratings
Item H7ER-NV-
@
H7ER-NV-
@
H
H7ER-N-
@
H7ER-NV1-
@
H7ER-NV1-
@
H
Operating mode
Up type
Mounting method
Flush mounting
External connections
Screw terminals, Wire-wrap Terminals (see note 3)
Display
7-segment LCD with or without backlight, zero suppression (character height: 8.6 mm) (see note 4)
Number of digits
45
Count input
PNP/NPN universal DC
voltage input
No-voltage input PNP/NPN universal DC voltage input
Max. counting speed
1 kHz 10 kHz
Max. revolutions displayed
(see note 5)
1,000 s
-1
(When encoder resolution of 1 pulse/rev is
used.)
1,000 min
-1
(When encoder resolution of 60 pulse/rev
is used.)
1,000.0 s
-1
(When encoder resolution of 10 pulse/rev
is used.)
1,000.0 min
-1
(When encoder resolution of 600 pulse/
rev is used.)
←→
10,000 min
-1
(When encoder resolution of
60 pulse/rev is used.)
(Switchable with switch)
Attachment
Waterproof packing, flush mounting bracket, revolution unit labels (see note 5)
Approved standard
UL863, CSA C22.2 No.14, Lloyds
Conforms to EN61010-1/IEC61010-1 (Pollution degree2/overvoltage category
III
)
Conforms to VDE0106/P100
Item H7ER-NV
@
-
@
H7ER-NV
@
-
@
H
H7ER-N-
@
Supply voltage
Backlight model: 24 VDC (0.3 W max.) (for backlight
lit)
No-backlight model: Not required (powered by built-
in battery)
Not required (powered by built-in battery)
Count input
High (logic) level: 4.5 to 30 VDC
Low (logic) level: 0 to 2 VDC
(Input impedance: Approx. 4.7 k
Ω
)
No voltage input
Maximum short-circuit impedance: 10 k
Ω
max.
Short-circuit residual voltage: 0.5 V max.
Minimum open impedance: 750 k
Ω
min.
Max. counting speed
4-digit models:1 kHz
5-digit models:10 kHz
1 kHz
Minimum signal width
10 kHz: 0.05 ms
1 kHz: 0.5 ms
Terminal screw tightening torque
0.98 N·m max.
Ambient temperature
Operating: -10
°
C to 55
°
C (with no condensation or icing)
Storage: -25
°
C to 65
°
C (with no condensation or icing)
Ambient humidity
Operating: 25% to 85%
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