Omron MC4700 - Cleaning; Cleaning Procedures

12
OMRON SCIENTIFIC TECHNOLOGIES INC.
Fremont CA USA
Tel: 1/888/510-4357 in USA and Canada
© OSTI 1209 PN99584-0050 Rev. E
Original Instructions
46
11.4 T EST CONSIDERATIONS WHEN USING EXACT CHANNEL SELECT OR
F
LOATING BLANKING
▲
!
Warning! Use of Exact channel Select and/or Floating Blanking will make the 4700 system less
sensitive to objects in the detection zone. Improper use of either can result in severe injury to
personnel. Exact
Channel Select may require a hard barrier guard (see section 5.8), Floating
Blanking requires an increase in the safety distance. Read section 5 carefully.
When Exact Channel Select and/or Floating Blanking are active the user must verify that the detection
zone
is bein
g used as intended, including the size and location of the selected/blanked beams.
Check for the following condition:
1. That unauthorized modification of the detection zone is not possible. The controller should be
insta
lled in
an enclosure with supervisor-controlled access.
2. That the area selected by Exact Channel Select is:
a. Completely blocked by an obstruction; or
b. that those areas not blocked by an obstruction are protected by supplemental guarding.
If neither of these conditions can be met, the safe mounting distance of the 4700 system should be
modified in
accordance
with the safe mounting distance formulas presented in Section 8 Safe
Mounting Distance.
3. Using a proper size test object and the method described in Section 11.3 Using
the Te
st Object,
check those areas which have not been programmed by Exact Channel Select. Be sure that they have
not been accidientally selected as
well.
12 T ROUBLESHOOTING 12
The controller contains a two-digit diagnostic display, which presents numeric codes indicating both
normal operation and system fault status. The operational codes are described in the table below.
Table 12-1 Operational Codes
Code Displayed System Status Corrective Action
88 Power-up indication. None required.
00 Normal operation; no floating
blankin
g or exact channel select.
None required.
01 Normal operation; waiting for start
signal.
Press and rel
ease start switch.
02 Normal operation; floating blanking
active
.
None required.
03 Normal operation; exact channel
select acti
ve.
None required.
04 Normal operation: floating blanking
and exact channel
select active.
None required.