Omron GRT1 - 11-2007 Operation Manual page 124

Analog Input Units
Internal Circuits
Wiring
Note
Input Range and
Conversion Data
Base block
Internal
circuits
Connect the terminals of the Analog Input Unit for each Input Unit according
to the following diagrams, depending on whether a voltage input or a current
input is being used.
Voltage Input
RSV
0+
0 V
0−
AG
SHT0A SHT1A
SHT0B SHT1B
Do not wire the RSV terminal. This terminal is used to connect an internal sig-
nal for heat radiation.
The analog data that is input will be converted to digital data according to the
input range, as described here. If the input exceeds the input range, the AD
conversion data will be fixed at the upper or lower limit.
■ Input Range: 0 to 5 V
The voltage range 0 to 5 V corresponds to 0000 to 1770 hex (0 to 6,000). The
convertible data range is FED4 to 189C hex (
Main block
Photo-
coupler
Isolated
power
Internal
supply
circuits
circuit
Current Input
RSV
RSV
1+
1− 0 V
AG
AG
SHT0A SHT1A
Short-circuit
SHT0B SHT1B
For current input, use the accessory tool to
short-circuit the SHTOA and SHTOB terminals together.
Section 5-4
Terminal block
510 kΩ
510 kΩ
250 Ω
AG
510 kΩ
510 kΩ
250 Ω
AG
RSV
0+ 1+
0− 1−
AG
300 to 6,300). Negative volt-
–
RSV × 2
0+
0−
SHT0A
SHT0B
AG
1+
1−
SHT1A
SHT1B
AG
103