Addendum 1 - Qsi Logo Controller; Plc Logo Controller Addendum (Added 03/04); Addendum 1 - Quincy Compressor QSI Series Instruction Manual

Introduction
The PLC LOGO controller is the standard QSI controller.
The LOGO controller is a universal logic module which
integrates control functions, an operating and display unit,
a power supply, an interface for program modules and a
PC cable and basic functions required in day-to-day
operation, such as functions for on/off delays.
PLC Program Installation Procedure
After verifying that the connections the LOGO controller
are correct (reference the appropriate wiring diagram in
series WP1962), install the PLC program module chip as
follows :
•
Make sure that all power to the electrical enclosure is
turned off and perform the appropriate lockout/tagout
procedures.
•
Using a small flathead screwdriver, carefully remove
the blank program chip module, located in the upper
right hand corner of the controller face (just above
the up/down arrow keys), from the PLC controller.
•
Carefully insert the red chip module, Quincy part
number 143819, into the chip slot.
CAUTION!
There is only one way to insert the chip. Do not
try to force the program chip into the slot. Doing
so will damage the chip and render it useless.
•
Reapply power and the PLC controller will run off of
the red program chip module.
Addendum to QSI instruction manual 65005-CB. Created 03/16/04

Addendum 1 -

LOGO Program Block Functions
Block number B02 is a latching relay used to latch the
start signal in and supply a continuous start signal to the
program.
To disengage the start signal, remove power to the logo
controller by pressing the stop button or by removing
power to the compressor using a disconnect.
Block number B03 is an off-delay timer which will time
out and shutdown the machine during non usage periods.
The default setting is 10 minutes. This timer may be
adjusted from 0 minutes to 99 hours. Contact the Quincy
service department to change the setting on this timer.
When the pressure switch opens (no signal from input I2),
the off time will begin. If the pressure switch does not
close again before the time setting is reached, the
compressor will shutdown. The compressor will restart
when the pressure switch closes or can be restarted by
turning the selector switch to the continuous run position
as long as there are no fault conditions present.
Block number B05 is a latching relay used to supply
voltage to the H.A.T. annunciator panel light.
When the H.A.T. probe circuit opens (no signal from
input I3), the Q3 output will energize and send power to
the annunciator indicator light. The light will stay
energized until power to the LOGO controller is removed.
Remove power to the LOGO controller by pressing the
stop button or by removing power to the compressor
using a disconnect.
Block number B06 is a latching relay which prevents the
unit from starting when a fault condition is present.
It latches in when there is a fault condition present such as
a motor overload trip, high air temperature, M1 contactor
opening or if the fan contact does not close within the
specified amount of time (refer to block number B09 for
fan timer function).
Resetting the fault condition will not reset the program.
To reset the program once the fault is corrected, remove
power to the LOGO controller by pressing the stop button
or by removing power to the compressor using a
disconnect.
Quincy Compressor-QSI ®
QSI Logo Controller
85