Omron H8PS Series Manual page 12

Precautions
I Cam Positioner
Error Displays and Cancelling
When an error occurs, perform the following cancellation operation. (When the following errors occur, all outputs turn OFF except for the TACHOM-
ETER output.)
Display
Set origin data error
Memory error, when settings have been modified
1. The back-up battery has expired.
2. The contents of memory have changed due to noise or
another factor.
Encoder input data error
1. The Encoder is malfunctioning or a connector is discon-
nected.
2. The Encoder rotation speed exceeds the response limit.
3. The Encoder output data became scrambled because of
noise.
4. A line to the Encoder is cut.
After turning on the power, it takes approximately two seconds until
normal operation,
When the ON angle and OFF angle are the same value, no output
will occur.
Handling
Turn the operation power on or off instantaneously via a contact such
as a switch or relay.
Avoid operation in the following environments:
1. An ambient temperature below -10°C or above 55°C.
2. Very dusty locations.
3. Very humid locations.
4. Locations where corrosive gasses are generated.
5. Locations with heavy vibrations or shock.
6. Locations prone to water or oil.
7. Locations with direct sunlight.
For operation in environments with excessive electrical noise genera-
tion, separate the Encoder cords and the main unit of the H8PS from
high-power cables that have noise or noise-generating sources.
Angle Data Table
The H8PS uses an absolute Encoder with 256 divisions per revolu-
tion. To assist with programming, displays and settings may be done
by conversion to 360 degrees by a switch on the front panel. The fol-
lowing table shows the conversions.
How to Use the Table
0 1
0° 1°
C-166
Cam Positioner
Description
256 display (Encoder output data)
360 display (360° converted data)
H8PS
Cancellation method
Reset the origin in the Programming Mode and return to the
previous mode.
Switch to the Programming Mode and confirm all settings. Af-
ter correcting the settings, return to the previous mode.
Switch to the Programming Mode and check the following
items. Return to the previous mode after corrections.
1. Encoder abnormality
2. Faulty Encoder connector contacts
3. Encoder rotation speed and response speed settings
4. Noise and surge protection
The external finish of the main unit is prone to organic solvents (thin-
ner, benzene, etc.), strong alkali (ammonia, sodium hydroxide), and
strong acid. Please avoid contact with theses chemicals.
Store the devices between -25°C and 65°C. For storage below
−10°C, power the unit up after letting it stand at room temperature for
three hours.
To perform dielectric testing, impulse-voltage testing, and insulation-
resistance measuring between the electrical circuitry and the
uncharged metal parts when the unit is mounted in a control panel,
first disconnect the wiring of the unit from the circuitry. (This prevents
degradation of damage of internal circuitry in the event that part of
the control-panel equipment has faulty voltage resistance or faulty
insulation. The test voltage might go to the power-supply terminals of
the main unit.)
The Encoder consists of precision parts. Exercise care in handling,
and make sure no excessive shock or pressure is applied to the
Encoder. Especially make sure that the Encoder's rotating shaft is
not subjected to excessive force.
The connections for the main unit connectors should have no undue
stress applied. Wire cables accordingly.