IC600PM542

IC600PM542
SERIES SIX
PROGRAMMABLE
GEK-90762
CONTROLLERS
24V dc INPUT HIGH CAPACITY
I/0 RACK POWER SUPPLY
GENERAL
The 24 V dc I/O Power Supply, which
provides power for Series Six I/O modules,
directly replaces a 115 V ac input high
capacity I/O Power Supply should a change
in source voltage become necessary or
desirable.
This power supply is a High
Capacity model and does not substitute for
a Standard I/O Power Supply.
The 24 V dc Input High Capacity I/O power
features
and
benefits
are
supply
in Table 1.
This supply
summarized
provides regulated +5V, +12V and -12 V dc
to the I/O rack backplane. The High
Capacity power supply provides power for
high current I/O module configurations and
remote (with modem) I/O applications.
Source Voltage :
20 TO 32 V dc
Output Vol tage:
+5,
+12,
-12 Vdc
DESCRIPTION
fuse to a switching power supply. For a
given load the input power drain is
essentially constant. The power supply is
protected against polarity reversal of the
dc input.
On the front pane! of the I/O rack power
supply is an ON/OFF switch labeled,
LOGIC POWER; visible through a lens is a
Light-Emitting Diode (LED) that lights
when the LOGIC POWER switch is in the
ON posit ion; and underneath a black
plastic cover is a source voltage terminal
block.
The I/O rack power supply also generates a
power-fail signal (PSOK) which is used for
system initialization and error indications-
The 24 V dc High Capacity I/O power
Refer to Table 2 (next page) for the High
input
voltages
operates
with
supply
l/O
rack
power
Capacity
ranging from 20 to 32 V dc. The input
supply
specifications.
power is applied to a terminal block on the
front panel, then routed through a switch
and
Table 1 FEATURES AND BENEFITS
FEATURES
Input voltage can be 20 to 32 V dc
BENEFITS
Can be used with dc power sources
POWER indicator on front panel.
Simplified troubleshooting.
Power-fail signal supplied to I/O
rack to generate system failure
indications.
Wide variety of output power
combinations.
TM Trademark of General Electric Company.
Useful in a variety of applications
more properly satisfy I/O rack
power requirements.
GEK-90762 24 V dc Input High Capacity I/O Rack Power Supply
1. Main-Circuit-Board
Terminal
1-3
Strip
2. Ground Terminal
3. Auxiliary-Circuit-Board Connector
4. Front-Panel Connector Block
5.
Power Switch
6. Fuse
7. POWER Light
On: The voltage levels of all three DC outputs (+12V, -12V, +5V) are within
tolerance.
Off: At least one of these voltage levels is too low.
Figure 1 USER ITEMS (Part 2 of 2)
INSTALLATION
Verify that the 24 V dc High Capacity
installed
power
supply
to
be
accomodate the estimated load. Total
current units as indicated in Table 3,
the I/O modules to be used.
I/O
can
the
per
1. Stop the system by switching the top
key on the CPU to STOP.
2. Switch off all units in the system,
including the user’s power supplies.
Input power requirements are a function of
load. T y p i c a l e f f i c i e n c y a t f u l l l o a d i s
approximately twice the estimated toad
power as determined from Table 3.
3. Remove all power from the system,
preferably at the source (i.e. throw
the main circuit breaker for the
system).
Verify that the dc input lines are of the
correct polarity before applying power. An
inadvertant reversal of input polarity will
cause the supply to draw excessive currents
and may blow an internal 8A slo-blow fuse.
This fuse must then be replaced and the
input polarity reversed before proper
operation can be attained.
4. Locate the I/O rack power supply to
be changed. The power supply is in
the far right side of the I/O rack.
These steps define the procedures to be
followed when a power supply is to be
replaced on a Series Six I/O rack. The tools
needed are a regular screwdriver, and a
5/16” wrench or nut driver.
6. Take note of the location and color
of the input wires and then remove
them.
5. Remove the plastic cover on the
lower port ion of the power supply
and, using a voltmeter, make sure
there is no input power present.
GEK-90762 24 V dc Input High Capacity I/O Rack Power Supply
7. At the top and bottom of the
are quarter
there
supply 9
thumbscrews.
To loosen, turn
thumbscrews approximately l/4
counterclockwise.
power 11.
turn
the
turn
8. Grasp the thumbscrews and gently
pull outward.
Be careful not to
damage the internal wiring while
pulling the supply out. Pull the power
supply completely out.
12.
9. Locate the wires that extend from the
back of the I/O rack to the terminal
on the power supply. These wires
should be labeled or stamped with 13.
their location; the circuit boards have
wire locations stamped on them also.
(Refer to Figure 3.) Remove these
wires. These is also a plastic wire
clamp holding these wires in place.
Detach this from the frame if there is
14.
not a similar item on the replacement
power supply, or cut the clamp if
there is one on the new supply.
IO. Remove the Molex connector that is
on the narrow board in the front part
o f t h e p o w e r s u p p l y . The power
supply should n o w b e c o m p l e t e l y
detached from the I/O rack.
15.
l-4
Take the replacement power supply
and attach the wires as shown in
Figure 3. Be sure to connect the
molex connector (PI) to the power
supply * Attach the wire clamp on
the uppper stud of the power supply
frame, or if there is a clamp already
there, wrap the wires in it.
Slide the power supply into the rack,
being careful not to damage the
wires. When the power supply is all
the way in, turn the thumbscrews
clockwise until they lock in.
Remove the plastic cover on the
lower portion of the power supply
and attach the Input wires as they
were on the original supply (Refer to
Step 6). Replace the plastic cover.
Restore system power. Turn on the
I/O rack.
Check to see if the
POWER light is on. If it is , turn on
the rest of the system and resume
normal operation.
If the POWER light does not come
on, the power supply is bad or there
are other problems within the I/O
rack. When this occurs, you can call
your
local
authorized
General
Electric
Programmable
Control
Distributor or your local General
Electric Sales office for assistance.
1-7
GEK-90762 24 V dc Input High Capacity I/O Rack Power Supply
ORDERING
INFORMATION
24 Vdc Input High Capacity I/O Rack Power Supply
I C6OOPM542
This symbol on the nameplate means the product is listed by
Underwriters Laboratories Inc. (UL Standard No. 508, Industrial
Control Equipment, subsection Electronic Power Conversion
Equipment.)
For further information, contact your local GE Fanuc sales office.
GE FANUC AUTOMATION NORTH AMERICA, INC., CHARLOTTESVILLE, VIRGINIA
November 1986
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