Omron H7CX Series

41
H7CXH7CX
■ Self-diagnostic Function
The following displays will appear if an error occurs.
Note: 1. The display for 4-digit models is given in parentheses.
2. Display flashes (1-second cycles).
3. Occurs when the present value or the total count value goes below
- 99,999 ( - 999 with 4-digit models).
4. Occurs when the present value (or measurement value) reaches 999,999 (9,999 with 4-digit models) under the following condi-
tions:
• The output mode is K-2, D, L, or H.
• The H7CX is set for dual counter or tachometer operation.
5. Except when the H7CX is set for tachometer operation.
6. Includes the case where the EEPROM has reached its overwrite lifetime.
■
Response Delay Time When Resetting
(Transistor Output)
The following table shows the delay from when the reset signal is
input until the output is turned OFF
(Reference values)
■ Output Delay Time
The following table shows the delay from when the present value
passes the set value until the output is produced.
Actual measurements in N and K-2 modes.
(Reference values)
Note: The above times may vary slightly depending on the mode
or operating conditions.
■
Maximum Counting Speed for Batch
Counter
The maximum counting speed for batch counter operation is
5 kHz. The batch counter counts the number of times the count
reaches the set value.
■
Wiring
Wiring input lines in the same conduit as power lines or other
high-voltage lines may result in malfunction due to noise. Wire the
input lines separately, away from lines carrying high-voltages. In
addition, make the input wiring as short as possible and use
shield lines or metal wiring conduits.
Pay attention to terminal polarity to ensure correct wiring.
■
Mounting
Tighten the two mounting screws on the Adaptor. Tighten them
alternately, a little at a time, so as to keep them at an equal tight-
ness.
The H7CX’s panel surface is water-resistive (conforming to NEMA
4 and IP66). In order to prevent the internal circuit from water
penetration through the space between the timer and operating
panel, attach a waterproof packing between the timer and instal-
lation panel and secure the waterproof packing with the Y92F-30
Flush-mounting Adapter.
Main display Sub-display Error Output status Correction method Set value after
reset

(  )
(See notes 1
and 2.)
No change Present value underflow
(See note 3.)
No change Either press the reset key or turn ON
reset input.
No change
%%%%%%
( %%%% )
(See notes 1
and 2.)
No change Present value overflow
(See note 4.)
No change Either press the reset key or turn ON
reset input. (See note 5.)
No change
$ Not lit CPU OFF Either press the reset key or reset
the power supply.
No change
$ Not lit Memory error (RAM) OFF Reset the power supply. No change
$ 24, Memory error (EEP)
(See note 6.)
OFF Reset to the factory settings using
the reset key.
0
Minimum reset signal width Output delay time
1 ms 0.8 to 1.2 ms
20 ms 15 to 25 ms
Control output
type
Maximum
counting speed
Output delay time
Contact output 30 Hz 16.5 to 24.0 ms
5 kHz 3.7 to 5.6 ms
Transistor output 30 Hz 12.0 to 20.0 ms
5 kHz 0.2 to 0.55 ms
It is recommended that the space between
the screw head and the adapter should be
0.5 to 1 mm.
0.5 to 1 mm