Lenord, Bauer GEL 8310, Руководство по эксплуатации, Страница: 130 / 226

M
OUNTING INSTRUCTIONS
7.4 Replacing an EPROM
7-7
8310/8610-8
7.4 Replacing an EPROM
The following statements are related to the program EPROM. The equivalent is
valid for EPROMs on other modules (e. g . SSI interface and PROFIBUS).
The program EPROM is located
−
on the main board behind the keyboard of the Controller for devices with
certification: PLCC type resp.
−
on the P
1
module (control inputs/outputs) for devices without
certification: DIL type.
7.4.1 PLCC EPROM
For the replacement all modules and blind plates have to be removed from the
Controller (GEL 8610: on the right half only), the P module may be excepted
from this with built-in memory card option.
✔
Disconnect all current sources from
the Controller
✔
Remove modules as described in
section 7.3.1
The EPROM is accessible now.
It will advantageously be removed from
the socket by means of a special
extractor tool. Starting from the fact that
this (expensive) tool is not available in
most cases, a U-shaped wire is
enclosed to the chip as a vehicle to pull
it out of the socket:
✔
Bring the bended ends of the bow under the chip
(
Œ
,

), press the bow slightly (
Ž
), and pull it up (

)
E
P
R
O
M
P
1
GEL 8310
X183003C
E
P
R
O
M
➊
➋
➌
➍
➌
X061AH