With 32 electronic modules, the current consumption (< 5000 mA) must be checked:
Table 3-5
Calculation table for current output
Electronic modules
x Number
of modules
Operational cur‐
rent per module
in mA
= Operational current
consumption in mA
Power supply PS 24 VDC/
PS 120/230 VAC
x 1
15 mA
= 15 mA
IM 152
x 1
30 mA
= 30 mA
8 DI NAMUR
x 5
80 mA
= 400 mA
4 DO DC23.1V/20mA SHUT DOWN "H"
x 2
290 mA
= 580 mA
4 DO DC17.4V/27mA SHUT DOWN "H"
x 5
260 mA
= 1300 mA
4 DO DC17.4V/40mA SHUT DOWN "H"
x ---
380 mA
= ---
4 DO DC23.1V/20mA SHUT DOWN "L"
x ---
290 mA
= ---
4 DO DC17.4V/27mA SHUT DOWN "L"
x ---
260 mA
= ---
4 DO DC17.4V/40mA SHUT DOWN "L"
x ---
380 mA
= ---
2 DO Relay UC60V/2A
x ---
100 mA
= ---
4 AI I 2WIRE HART
x 3
280 mA
= 840 mA
4 AI I 4WIRE HART
x 5
27 mA
= 135 mA
4 AI RTD
x 5
19 mA
= 95 mA
4 AI TC
x 4
17 mA
= 68 mA
4 AO I HART
x 3
295 mA
= 885 mA
Reserved
x ---
---
---
WATCHDOG
x ---
2 mA x DO **
= ---
Total Mod‐
ules
=
Total Current Consump‐
tion
= 4348 mA
max. 32*
< 5000 mA
* Without power supply PS and IM 152
** Operational current consumption of WATCHDOG module = 2 mA x number of connected digital
output modules
Note
The limit values are adhered to in the example.
Result: ET 200iSP station can be operated with this configuration.
Calculation of ET 200iSP power loss
You can calculate the power loss of the ET 200iSP using the following formula:
P
Vtotal
= x*5W + 1.2*∑
PV_Type_I/O
Explanation:
Configuration options
3.6 Restricted Number of Connectable Electronics Modules
ET 200iSP
Operating Instructions, 11/2017, A5E00247483-07
55
