S8AS Datasheet, PDF (7/26 Pages) Omron Electronics LLC – Smart Power Supply

Constructions and Nomenclature
Nomenclature
S8AS-24006@
12
9 13
S8AS-24006
POWER SUPPLY
LN
INPUT
50/60Hz AC100-240V 3.8A
A(-)
B(+)
RS485
123456
123
V A Yrs °C s
456
Class2
+V
OUTPUT
DC 24V 3.8A
-V
-V
DC ON V.ADJ
+1 +2 +3 +4 +5 +6
TRP LOW
LFE TMP
COM
TRG
+-
-1 -2 -3 -4 -5 -6
8
10
11
12
3
6
57
S8AS-48008@
12
4
9
13
LN
INPUT
50/60Hz AC100-240V 7.4A
TRP LOW
LFE
TMP
COM
TRG
+-
S8AS-48008
POWER SUPPLY
A(-)
B(+)
RS485
12345678
1234 5
V A Yrs °C s
678
DC ON V.ADJ
Class2
+V
OUTPUT
DC 24V 3.8A
-V
-V
+1 +2 +3 +4 +5 +6 +7 +8
-1 -2 -3 -4 -5 -6 -7 -8
5
67
4
5. I/O Signal Terminal Internal
Circuit Configuration
Photoswitch
8
10
11
12
3
TRP
LOW
LFE
TMP
COM
TRG
+-
(A) (B) (C) (D) (E) (F) (G)
S8AS
No.
Name
Functions
1 AC Input Terminals (L and N)
Connects the input power supply
(100 to 240 VAC, 50/60 Hz)
(commercial power supply). *1
2 Protective Earth (PE) Terminal ( ) Connects to the ground wire. *2
3
Positive Branch Output Terminals (+)
Screwless terminals with 2-pole
terminals for each branch output.
Screwless terminals with 2-pole
4
Negative Branch Output Terminals (−)
terminals for each branch output
and screw terminal shared by the
negative branch output terminals.
(A)
Tripping Alarm
Output (TRP) *3
Turns ON to indicate when an
abnormal voltage or current was
detected and the output was cut
off. (The photoswitch output will
turn OFF.)
Undervoltage
(B) Detection Output
(LOW)
Turns ON to indicate when the 24-
VDC output voltage of the S8AS falls
below the threshold due to decrease
in input voltage or other factors. (The
photoswitch output will turn OFF.)
Maintenance
I/O
(C) Forecast Monitor
5 Signal
Output (LFE)
Terminals
Turns OFF to indicate when the
number of years to the set
replacement time has been
reached. (The photoswitch output
will turn OFF.)
(D)
Over-temperature
Output (TMP)
Turns ON to indicate that the
temperature exceeded the over-
temperature output threshold. (The
photoswitch output will turn OFF.)
Negative Common
(E) Terminal (COM)
(no polarity)
Negative common shared by the
four alarm outputs ((A) to (D)) above.
(F)
Positive External
Tripping Input (TRG+)
Can be used to send an input
signal from an external device to
(G)
Negative External
Tripping Input (TRG−)
cut off a branch output. *4
6
Output Indicator (DC ON (Green))
Indicates whether there is output
voltage supplied.
7 Output Voltage Adjuster (V.ADJ) Adjusts the output voltage.
8 Seven-segment Display (Red)
Displays measured values or set values.
Light or flash when there is a
9 Branch Output Indicators (Orange) display related to branch output
(outputs 1 to 6 and 8). *5
10 Unit Indicators (Orange)
Light or flash when there is a unit (e.g.,
V, A, Yrs, °C, s) related to the value
shown on the 7-segment display.
11 Status indicators (Red/Green)
Indicate the status of the branch outputs:
Cutoff: red, Connected: green. *6
Reset (RST) Key
Used to clear the error status when
a branch output was cut off by an
error or there was an alarm output.
Enter (ENT) Key
12
Operation
Keys
Up (SEL) Key
Used to switch the display item,
enter or execute settings, etc.
Used to change the display item
forward or to increase a set value.
Down (CH) Key
Used to switch the branch output
or to decrease a set value.The
branch output number that is set
remains the same in other modes.
Communications Terminals (A (−),
13
B (+))
(Only for Models That Support
Communications)
Used to connect to the RS-485
communications line.
Note: The noise value depends on the wiring method and other factors. Insert
a clamp filter (recommended: E04SR301334 manufactured by SEIWA)
on the communications wiring as a countermeasure against noise.
*1. The fuse is located on the (L) side.
*2. This is the protective earth terminal specified in the safety
standards. Always ground this terminal.
*3. In Test Mode, the tripping alarm output (TRP) will operate even if
one or more of the branch outputs is set to OFF. This error output,
however, will not be held when operation moves to another
operating mode.
*4. Wire the polarity of the external tripping input correctly. After
completing wiring, confirm that the input operates correctly.
*5. The branch output indicators are OFF when current is not used.
*6. 6.Information on procedures for detailed displays is given in
Status Indicators on page 16.
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