Omron SmartSlice GRT1 Series - Page 123

103
Analog Input Units Section 5-4
Internal Circuits
Wiring 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.
Note Do not wire the RSV terminal. This terminal is used to connect an internal sig-
nal for heat radiation.
Input Range and
Conversion Data
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 (
–300 to 6,300). Negative volt-
0+
SHT0A
250 Ω
510 kΩ
510 kΩ
AG
0−
SHT0B
RSV × 2
1+
SHT1A
250 Ω
510 kΩ
510 kΩ
AG
1−
SHT1B
AG
AG
Internal
circuits
Photo-
coupler
Isolated
power
supply
circuit
Internal
circuits
Base block
Main block
Terminal block
0 V
Current Input
For current input, use the accessory tool to
short-circuit the SHTOA and SHTOB terminals together.
RSV
RSV
0+ 1+
0−
1−
AG
AG
0 V
Voltage Input
RSV
RSV
0+ 1+
0−
1−
AG
AG
SHT0A
SHT1A
SHT0B
SHT1B
SHT0A
SHT1A
SHT0B
SHT1B
Short-circuit