FloBoss 407 Instruction Manual
Rev 5/00 3-17
3.4.8 Discrete Output Isolated Module
A schematic representation of the field wiring connections to the output circuit of the Discrete Output
Isolated module is shown in Figure 3-14.
NOTE
The Discrete Output Isolated module is designed to operate only with discrete
devices having their own power source. The module is inoperative with
non-powered devices.
The Discrete Output Isolated module operates by providing a low or high-output resistance to a field
device. When the field device provides a voltage across terminals A and B of the module, current
either flows or is switched off by the DO Isolated module. The switching is controlled by the
ROC/FloBoss electronics.
1 Amp
DOC0146A
(Modified)
CONTROL
DO ISO
+5V
B
V
O
= VOLTAGE FROM DISCRETE DEVICE = 11 TO 30 VDC, 1.0 A MAX
N/C
C
–
–
+
A
DISCRETE DEVICE
SELF-POWERED
V
O
+
Figure 3-14. Discrete Output Isolated Module Field Wiring
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