User manual

Publication CIG-WD001B-EN-P - May 2005
11-2 1769 Compact I/O Modules
+DC
+5/24V dc
-DC
Z1-
B1-
A1-
Z0-
B0-
A0-
OUT
DC COM
OUT 2
OUT 0
Z1+
B1+
A1+
Z0+
B0+
A0+
OUT 3
OUT 1
OUT DC
+5/24VDC
CR
CR
CR
A
B
Z
A1(+)
A1(–)
B1(+)
B1(–)
Z1(+)
Z1(–)
GND
VS
+VDC
COM
R
(2)
Cable
1
Power
Supply
Allen-Bradley 845H
Series single-ended
encoder
shield/housing
Connect only if housing is electronically isolated from
the motor and ground.
Shield
Module Inputs
Earth
2.
where:
R = maximum pull-up resistor value
Vdc = power supply voltage
Vmin = 2.6V dc
Imin = 6.8 mA
(a)
(a)
5V dc 35 2 Ω
12 V dc 1 3 8 2 Ω
24 V dc 3 1 4 7 Ω
R
V
dc Vmin –()
Imin
----------------------------------------=
Maximum Pull-Up Resistor ValuePower Supply Voltage (V dc)
Resistance values may change, depending on your application. The minimum resistor (R)
value depends on the current sinking capability of the sensor. Refer to your sensor's documentation.
1.
External resistors are required if they are not internal to the sensor. The pull-up
resistor (R) value depends on the power supply value. The table below shows the
maximum resistor values for typical supply voltages. To calculate the maximum resistor
value, use the following formula:
Refer to your encoder manual for proper cable type. The type of cable used should
be twisted pair, individually shielded cable with a maximum length of 300m (1000ft).
1769-HSC – Output Device applications 1769-HSC – Single-Ended Encoder applications
IN 7
IN 5
IN 3
IN 1
AC
COM
IN 6
IN 4
IN 2
IN 0
L1
L2
100/120V ac
IN 14
IN 12
IN 10
IN 8
AC
COM
IN 15
IN 13
IN 11
IN 9
Commo ns are
connected
internally.
AC
COM3
NC
IN 3
IN 7
IN 6
IN 5
IN 4
NC
AC
COM7
AC
COM6
AC
COM5
AC
COM4
AC
COM 0
IN 0
L1a
L2a
100/120V ac
AC
COM 1
IN 1
L1b
L2b
100/120V ac
AC
COM 2
IN 2
L1c
L2c
100/120V ac
1769-IA16 1769-IA8I