User manual

Publication CIG-WD001B-EN-P - May 2005
9-8 1762 I/O on MicroLogix 1200 Controllers
IN0 -
IN1 -
IN2 -
IN3 -
IN0 +
IN1 +
IN2 +
IN3 +
COM
COM
Commons connected
internally.
Differential Sensor Transmitter Types
Analog Sensor
Grounding the cable shield at the module end only
usually provides sufficient noise immunity. However,
for best cable shield performance, earth ground the
shield at both ends, using a 0.01µF capacitor at one
end to block AC power ground currents, if necessary.
All power supplies rated N.E.C. Class 2.
Select the input type, current or voltage, using the
switch located on the module’s circuit board and
the input type/range selection bits in the Configuration
Data File.
+
+
-
-
+
-
+
-
IN +
IN -
COM
+
-
IN +
IN -
COM
+
-
IN +
IN -
COM
Power
Supply
(1)
Power
Supply
(1)
Power
Supply
(1)
Transmitter
Transmitter
Transmitter
Module
Module
Module
Supply Signal
Supply Signal
2-Wire Transmitter
3-Wire Transmitter
4-Wire Transmitter
1762-IF4
IN 7
IN 5
IN 3
IN 1
IN 6
IN 4
IN 2
IN 0
24V dc
IN 15
IN 13
IN 11
IN 9
DC
COM 0
IN 14
IN 12
IN 10
IN 8
24V dc
DC
COM 1
+DC (sinking)
-DC (sourcing)
-DC (sinking)
+DC (sourcing)
+DC (sinking)
-DC (sourcing)
-DC (sinking)
+DC (sourcing)
Be careful when stripping wires. Wire fragments that fall into a
module could cause damage when power is applied. Once wiring
is complete, ensure the module is free of all metal fragments.
Miswiring of the module to an AC power source will damage
the module.
Sinking/Sourcing Inputs - Sourcing/sinking describes the current flow between the
I/O module and the field device. Sourcing I/O circuits supply (source) current to sinking
field devices. Sinking I/O circuits are driven by a current sourcing field device.
Field devices connected to the negative side (DC Common) of the field power supply
are sinking field devices. Field devices connected to the positive side (+V) of the
field supply are sourcing field devices.
Also, this product is intended to be mounted to a well-grounded mounting surface
such as a metal panel.
1762-IQ16