CARLO GAVAZZI VMU-C EM, Instruction Manual

Page: 63 / 126

VMU-C
VMU-C Instruction manual 63
3.5 CONFIGURATION OF THE VMU-M EM
MODULES
Pressing the “NEXT” button again will grant access to the screen allowing to configure
the VMUM-EM modules connected to VMU-C EM.
VMU-M module configuration mask

Besides the label defined above, the top section displays the ModBus address for
the specific VMU-M EM module.

The bottom section is used for the configuration of the digital or temperature
inputs and for other general alarms. Two sections are described below:
A. Inputs :
Define the use of the inputs existing on the VMU-M EM module:

NONE: the module inputs will have no use.

For TEMPERATURE reading (on one or two channels; probe type:
Pt100 or Pt1000, 2 or 3 wires).

DIGITAL:
digital input “1” shall be used to read the status
(Open/Closed) of a digital contact (for example to detect whether
the DC protection has tripped or not).
Note : when inputs are used for temperature reading, define whether you wish to
manage the ALARM function for each channel.. In this case to set the values of
“Threshold 1” and of “Threshold 2” (for values of “T1” exceeding or equal to those of
“T2” you will get a MAXIMUM alarm; for values of “T1” lower than those of “T2” you will
get an alarm with MINIMUM operation). You also have to define whether the alarm must
be VIRTUAL or REAL (associated with a relay output of VMU-O).
B. Other alarms group :
Set the use of a further alarm managed by VMU-M EM