VM600 MPS hardware manual (standard version) MAMPS-HW/E 9 - 21
Edition 17 - February 2018
Connecting speed sensors
CONFIGURATION OF MPC4 / IOC4T CARDS
9.3.1 General considerations
The IOC4T circuitry associated with the PS, HI, LO and SHIELD terminals (see Figure 9-15)
is configurable using the VM600 MPS software. More specifically, the fields found on the
property sheets for the Speed Channels node (a child of the Inputs node) in the tree
structure (left) are used to configure switch Sw1 automatically and appropriately for a variety
of applications and different types of transducer and/or signal conditioner (see Figure 9-14).
NOTE: Refer to the relevant manual for further information: VM600 MPS1 software
manual or VM600 MPS2 software manual.
Switch Sw1 is set according to whether a voltage-modulated or a current-modulated signal is
provided by the transducer or transducer and signal conditioner system:
• Voltage-modulated signal: Sw1 open.
• Current-modulated signal: Sw1 closed.
The position of Sw1 is determined by the setting of the Signal Transmission Mode field (see
Figure 9-14). The correct setting (current or voltage) is chosen automatically by the program
when standard transducers and signal conditioners from Meggitt Sensing Systems’
Vibro-Meter product line are selected (using the Sensor Type and Conditioner fields). For
non-Vibro-Meter devices, the operator must enter the appropriate setting (current or voltage)
in the Signal Transmission Mode field.
Unlike the Measurement channels inputs, the speed channel inputs do not have switch
Sw2, so the corresponding Speed Channels inputs windows (under the parent Inputs node)
do not have a Sensor Power Supply field. (The sensor power supply is always î›27.2 V.)
The Sensor Connected field has no direct influence on the setting of Sw1. The field can be
considered as a comment for the user. When it is set to "No", the other fields in this VM600
MPS software window will be unavailable (that is, appear greyed out), but the values and
settings are still effective.
Figure 9-14: VM600 MPS software Speed Channels inputs window
To Next Page
Loading...
Need help?
General
