M-system R3S-RS4A Instruction Manual page 2

■ INDICATORS
RUN indicator: Bi-color (red/green) LED; Red when the bus
A operates normally; Green when the bus B
operates normally; Amber when both buses
operate normally.
ERR indicator: Bi-color (red/green) LED; Red with the in-
put abnormality; Green in normal operating
conditions.
■ SIDE DIP SW
• RTD Type: SW1, SW2
INPUT 1 (SW1)
INPUT 3 (SW2)
1 2
OFF OFF
ON OFF
OFF ON
OFF ON
• Burnout: SW3
SW3-1
OFF
ON
• Temperature Unit: SW3
SW3-2
OFF
ON
TERMINAL CONNECTIONS
Connect the unit as in the diagram below.
RTD
1
A
INPUT 1
2
B
3
B
RTD
5
A
INPUT 2
6
B
7
B
RTD
11
A
INPUT 3
12
B
13
B
RTD
15
A
INPUT 4
16
B
17
B
4
SLD
8
SLD
14
SLD
18
SLD
19
SLD
SLD
20
*2
*1. For dual redundant communication.
*2. To make use of shield line, connect to SLD and ground the terminal 20's shield.
Note: Do not use void terminals.
3 4 5
OFF OFF OFF
OFF OFF ON
OFF OFF OFF
ON OFF OFF
BURNOUT
Upscale (*)
Downscale
SW3-3 TEMP. UNIT
OFF °C (*)
°F
OFF
BUS A
1
BUS B*
INTERNAL POWER
INPUT 2 (SW1)
INPUT 4 (SW2)
6 7
OFF OFF OFF
OFF OFF OFF
ON OFF OFF
ON ON OFF
• Conversion Rate: SW3
SW3-4
OFF
ON
(*) Factory setting
• Unused Input Channels
Close across the unused input terminals with a resistor as
shown below and set the DIP switch for Pt 100 input.
INPUT 1 INPUT 2
1
100
2
3
Unused channels left open are equal to the burnout, which
turns the red ERR LED on and sets a burnout flag at the
PLC or the host device.
Unused channels can be specified and set so on the PC Con-
figurator Software (model: R3CON) without needing to con-
nect resistors at the field terminals.
R3S-RS4A
RTD
8
Pt 100 (*) (JIS '97, IEC)
Pt 100 (JIS '89)
JPt 100
Pt 1000
CONV. RATE
250 msec.
1 sec.
INPUT 3 INPUT 4
5 11 15
6 12 16
7 13 17
EM-8936
(*)
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