INTRODUCTION
7 - 1
SECTION 7 - PREVENTIVE MAINTENANCE
INTRODUCTION
The reliability of any stand-alone product or control system is affected
by the maintenance of the equipment. ABB strongly recommends that
all equipment users practice a preventive maintenance program that
will keep the equipment operating at an optimum level.
NOTE:
Maintenance personnel should be qualified electrical techni-
cians or engineers that know the proper use of test equipment. They
should also be familiar with the Type SLC controller, have experi-
ence working with process control systems, and know what precau-
tions to take when working on live AC systems.
USING THE LOOP BYPASS STATION
The Type CLB01 Loop Bypass Station is available as an accessory
from ABB. It is a tool for maintenance personnel that allows the inter-
face and/or the main board to be removed for service or replacement
while maintaining direct manual control of the process. Refer to the
instruction for detailed information of
operation before continuing.
The following procedures outline use of the loop bypass station.
1. Transfer control to the bypass mode from the main menu.
2. Connect the loop bypass cable to connector P3 (Fig.
2-17
) on the
controller termination board and transfer analog output control to the
loop bypass station.
3. Refer to
for procedures for removing the operator inter-
face board.
WARNING
System maintenance must be performed only by qualified per-
sonnel and only after securing the equipment controlled by the
circuit. Altering or removing components from an active circuit
may upset the controlled process leading to personnel injury
and equipment damage.
AVERTISSEMENT
L’entretien du système ne doit être effectuée que par le person-
nel qualifié et seulement une fois que l’équipement contrôlé
par le circuit est fixé en place. La modification ou le retrait des
composants d’un circuit actif pourraient perturber le proces-
sus contrôlé et menter à des blessures au personnel et à
l’endommagement de l’équipement.
