SKF IMx-M, Руководство пользователя, Страница: 227 / 293

Hardware
Hardware Configuration
SKF Multilog On
-Line System IMx-M 4 - 23
User Manual
The location of RS485 Modbus termination DIP switch is found in DIP Switches on
Protection Module drawing.
4-20 mA Output
Each CMM + PRM slot offers 16 4–
20 mA Outputs. This connection is
used for sending
protection measurement values from the CMM + PRM slot to the distributed control
system (DCS
) . Each 4–20 mA output can be configured to reflect the value of analog
channel measurement or related combined measurement.
Each 4–
20 mA Output is updated every 640 ms.
The values are related to the scale setup in 4-
20 mA Outputs configuration via IMx
-M
Manager. 4 mA will correspond to the minimum scale value and 20 mA to the
maximum scale value with a linear scaling between those values.
Examples are shown below.
•
Scale configured to 0 to 10 will give
4 mA = 0
20 mA = 10
•
Scale configured to -10 to 30 will give
4 mA = -10
8 mA = 0
20 mA = 30

A cable fault will result in less than 3 mA output.
Selection of the output voltage is done via a jumper (JMP2). The jumper (JMP2) is
located on the condition monitoring module as shown in the DIP Switch and Jumper on
Condition Monitoring Module DIP Switch and Jumper on Condition Monitoring Module
drawing. The configuration of jumper is shown below.
Figure 4 - 14.
4–20 mA
O
utput Voltage Selection.
The pinouts of 4-20 mA 37-Pin D-sub are listed in 4-
20 mA Out
in the CMM + PRM
Slot Connections chapter.