Allen-Bradley MicroLogix 1200 User Manual page 139

Table F.7 Validating Systems using 1762-L24AWA, 1762-L24BXB, 1762-L24AWAR or 1762-L24BXBR
Maximum Allowable Values
Current:
400 mA at 5V dc 350 mA at 24V dc
System Loading:
10.4 Watts
Table F.8 Validating Systems using 1762-L24BWA or 1762-L24BWAR
Maximum Allowable Values
Current for Devices Connected to the +24V dc Sensor
Supply:
250 mA at 24V dc
Current for MicroLogix Accessories and Expansion I/O: Current (Subtotal 1 from Table F.5 + Subtotal 2 from Table F.6.)
400 mA at 5V dc
System Loading:
12 Watts
Table F.9 Calculating the Current for MicroLogix Accessories
Catalog Number
(1)
1761-NET-AIC when powered by the base unit
communications port, selector switch in the up position
Subtotal 1:
(1) This is an optional accessory. Current is consumed only if the accessory is installed.
Calculated Values
Current (Subtotal 1 from Table F.5 + Subtotal 2 from Table F.6.):
mA at 5V dc
System Loading:
= (________ mA x 5V) + (________ mA x 24V)
= __________ mW + __________ mW
= __________ mW
= __________ W
350 mA at 24V dc
System Loading Example Calculations (40-Point Controller)
Current Loading
Calculated Values
Sum of all sensor currents
Include 1761-NET-AIC here rather than in Table F.5, if it is powered externally by
the sensor supply
mA at 24V dc
mA at 5 V dc
System Loading:
= (________ mA x 24V) + (________ mA x 5V) + (________ mA x 24V)
= __________ mW + __________ mW + __________ mW
= __________ mW
= __________ W
Device Current Requirements
at 5V dc (mA)
0
System Loading and Heat Dissipation
mA at 24V dc
mA at 24V dc
Calculated Current
at 24V dc (mA) at 5V dc
(mA)
120 0
0
Publication 1762-UM001D-EN-P - March 2004
F-5
at 24V dc
(mA)
120
120