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ROC800-Series Instruction Manual
3-14
Power Connections
Revised Jul-14
Table 3-7. Estimated Power Consumption
Device
Power Consumption (mW)
Quantity
Used
Sub-Total
(mW)
Description
P
TYPICAL
CPU and ROC809 Backplane
Power Input Module PM-12 (60W max)
87.5 mA @ 12 volts dc
1050 mW
Power Input Module PM-24 (24W max)
102.1 mA @ 24 volts dc
2450 mW
Power Input Module PM-30 (70W max)
115 mA @ 11 volts dc 1265 mW
Power Input Module PM-30 (80W max)
102 mA @ 30volts dc 3060 mW
Per Active LED – Maximum 13
1.5 mA
18 mW
CPU and ROC827 Backplane
Power Input Module PM-12
104.2 mA @ 12 volts dc
1250 mW
Power Input Module PM-24
110.4 mA @ 24 volts dc
2650 mW
Power Input Module PM-30 (70W max)
99 mA @ 11 volts dc
1089 mW
Power Input Module PM-30 (80W max)
90 mA @ 30 volts dc
2700 mW
Per Active LED – Maximum 13
1.5 mA
18 mW
EIA-232 (RS-232) Module
4 mA @ 12 volts dc
48 mW
Per Active LED – Maximum 4
1.5 mA
18 mW
EIA-422/485 (RS-422/485) Module
112 mA @ 12 volts
1344 mW
Per Active LED – Maximum 2
1.5 mA
18 mW
Dial-up Modem Module
95 mA @ 12 volts dc
1140 mW
Per Active LED – Maximum 4
1.5 mA
18 mW
Expanded Backplane (ROC827 only)
25 mA @ 12 volts dc
300 mW
Total for ROC800 Base Unit
mW
AI Modules
Total (from Table 3-8)
AO Modules
Total (from Table 3-9)
DI Modules
Total (from Table 3-10)
DO Modules
Total (from Table 3-11)
DOR Modules
Total (from Table 3-12)
PI Modules
Total (from Table 3-13)
MVS Module
Total (from Table 3-14)
MVS I/O Module
Total (from Table 3-15)
APM Modules
Total (from Table 3-16)
RTD Modules
Total (from Table 3-17)
Thermocouple Modules
Total (from Table 3-18)
HART-2 Modules
Total (from Table 3-19)
IEC 62591
Total (from Table 3-20)
NRM
Total (from Table 3-21)
Total for All Modules
mW
Total for ROC800 Base Unit and All Modules
mW
Other Devices
Total (from Table 3-22)
mW
Total for ROC800 Base Unit, All Modules, and Other
Devices
mW
Power System Safety Factor (0.25)
mW
Total for Configured ROC800
mW