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ROC800-Series Instruction Manual
4-8
Input/Output Modules
Revised Jul-14
D301250X012) or the
ROCLINK 800 Configuration Software User
Manual (for ROC800L)
(Part Number D301246X012).
Note
:
The AI-16 module provides 16-bit resolution and uses a 24-bit
A/D converter. DIP switches on the AI-16 module (see
Figure 4-
6
) allow you to select between current and voltage loop input.
You can configure the AI (+T) module as either 12 or 24 Volt dc using
jumper J4 on the AI-12 module (see
Figure 4-4
). The AI modules can
provide isolated +12 Volt dc or +24 Volt dc field transmitter power on a
per-module basis. For example, one module can provide +12 Volts dc
for powering low power analog transmitters, while another module in
the same ROC800 can provide +24 Volts dc for powering conventional
4–20-mA transmitters. Refer to
Figure 4-5
.
A
12 / 24 V dc Jumper
Figure 4-4. AI-12 Jumper J4 (Shown Set to +12V)
Figure 4-5. Analog Input Module Field Wiring (AI-12 and AI-16)
1-5 VOLT DEVICE
EXTERNALLY POWERED
+
-
1-5 VOLT DEVICE
ROC800 POWERED
+
-
ROC800 POWERED
CURRENT LOOP DEVICE 4-20mA
-
+
OUT SIGNAL
COM
IN
DOC0506C
+
+
+
OUT SIGNAL
COM
1-5 VOLT DEVICE
EXTERNALLY POWERED
1-5 VOLT DEVICE
ROC800 POWERED
CURRENT LOOP DEVICE 4-20mA
ROC800 POWERED
-
-
-
IN
DOC0514B
250
250
250
250
Precision
Resistor
A