Omron H7CX Series Manual page 38

H7CX
Self-diagnostic Function
The following displays will appear if an error occurs.
Main display Sub-display
ÈÈÈÈÈÈ
No change
( ÈÈÈÈ )
(See notes 1
and 2.)
777777
No change
( 7777 )
(See notes 1
and 2.)
6
Not lit
6
Not lit
6 PRD
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
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
Minimum reset signal width
1 ms
20 ms
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.
Control output Maximum
type counting speed
Contact output 30 Hz
5 kHz
Transistor output 30 Hz
5 kHz
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.
Error
Present value underflow
(See note 3.)
Present value overflow
(See note 4.)
CPU
Memory error (RAM)
Memory error (EEP)
(See note 6.)
(Reference values)
Output delay time
0.8 to 1.2 ms
15 to 25 ms
(Reference values)
Output delay time
16.5 to 24.0 ms
3.7 to 5.6 ms
12.0 to 20.0 ms
0.2 to 0.55 ms
Output status Correction method
No change Either press the reset key or turn ON
reset input.
No change Either press the reset key or turn ON
reset input. (See note 5.)
OFF Either press the reset key or reset
the power supply.
OFF Reset the power supply.
OFF Reset to the factory settings using
the reset key.
- -
99,999 ( 999 with 4-digit models).
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.
0.5 to 1 mm
It is recommended that the space between
the screw head and the adapter should be
0.5 to 1 mm.
H7CX
Set value after
reset
No change
No change
No change
No change
0
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