Rockwell Automation AADvance Controller System Build - Manual (Page 39)

Document: 553632
(ICSTT-RM448_EN_P) Issue: 08:
2-9
Power Arrangements for Field Devices Power Arrangements for Field Devices Power Arrangements for Field Devices Power Arrangements for Field Devices
The input circuits and the output modules of the controller require an external source
of power for field devices. This may be the power source used for the controller or a
separate power source, depending on the application.
For digital and analogue outputs a field power supply of + 24V dc within a range of
18 - 32V dc is required.
The power distribution circuit for each field input and for each output module must be
protected, externally to the controller. For a typical system, it is recommended that
you provide a single breaker on the output of the field power source, followed by one
or more multi-way fused distribution boards.
Estimate Module Supply Power Dissipation and Field Loop Power Dissipation Estimate Module Supply Power Dissipation and Field Loop Power Dissipation Estimate Module Supply Power Dissipation and Field Loop Power Dissipation Estimate Module Supply Power Dissipation and Field Loop Power Dissipation
Module supply voltage and field power consumption is dissipated as heat. Use these
tables to estimate the supply voltage and field power heat dissipation of your system.
Table 2: Table 2: Table 2: Table 2: Estimating Module Supply Power Dissipation Estimating Module Supply Power Dissipation Estimating Module Supply Power Dissipation Estimating Module Supply Power Dissipation
Item
Number
of
Modules Power Dissipation
Subtotal
(W/BTU/hr)
T9110 Processor Module × 8.0W (27.3BTU/hr) =
T9401 Digital Input Module 24V dc, 8 channel × 3.3W (11.3BTU/hr) =
T9402 Digital Input Module 24V dc, 16 channel × 4.0W (13.6BTU/hr) =
T9431 Analogue Input Module, 8 channel × 3.3W (11.3BTU/hr) =
T9432 Analogue Input Module, 16 channel × 4.0W (13.6BTU/hr) =
T9451 Digital Output Module, 24V dc, 8 channel × 3.0W (10.2BTU/h) =
T9482 Analogue Output Module, 8 channel, isolated × 3.6W (12.3BTU/hr) =
Total:
Table 3: Table 3: Table 3: Table 3: timating Field Loop Power Dissipation timating Field Loop Power Dissipation timating Field Loop Power Dissipation timating Field Loop Power Dissipation
Item Number
of Field
loops Maximum Field
Loop Power
Dissipation Subtotal
(W/BTU/hr)
T9801/2/3 Digital Input Termination Assembly (powered by
the T9401/2 module) × 0.2W (0.68BTU/hr) =
T9831/2/3 Analogue Input Termination Assembly (powered
by the T9431/2 module) × 0.08W
(0.27BTU/hr) =
T9451 Digital Output Module, 24V dc, 8 channel (1A load) x 0.57W (1.94
BTU/hr) =
T9482 Analogue Output Module, 8 channel, isolated × 0.77W
(2.63BTU/hr) =