VIBROBIT MK40 User Manual

ВШПА.421412.304 И1 SCIENTIFIC-PRODUCTION ENTERPRISE VIBROBIT LLC
External test signal
External test signal can be connected to measuring channel input. External signal source can be determined by
S5, S6 bridges.
For MK40-AC-11-S design option 50Hz test signal is generated from mains AC 220V 50Hz voltage.
Connection/disconnection of external timing signal can be implemented by commands via digital communication
interfaces or by user pressing front panel keys for MK40-DC-11 and MK40-AC-11-S design options.
Test signal connection must be enabled during the module setup (TestEnabled).
“STOP” mode test
MK40 Module can generate false “STOP” mode alarm signal at logic outputs. This function can be useful for
“STOP” alarm circuits test before equipment stop block.
Switching on/off of “STOP” mode test can be implemented by commands via digital communication interfaces or
by user pressing front panel keys for MK40-DC-11 and MK40-AC-11-S design options.
“STOP” mode test must be enabled during the module setup (StopEnabled parameter).
Standard output
Standard current output is provided for each measuring channel. Signal level at standard output is proportional
to measured parameter value. Standard output current range, corresponding to measured parameter range, can be
selected randomly during the module setup.
Current setting at standard output is implemented by 12-bit DAC and dynamic current amplifier, designed for
grounded load connection. Protective stabilitrons (breakdown voltage 27V) and 200mA resettable fuse for standard
output circuit protection.
DAC value of standard output is calculated by linear equation formula:
DAC
OUT
= A
O
+ B
O
⋅ D
Param
where
DAC
OUT
– DAC calculated value;
D
Param
– calculated value of measured parameter;
A
O
, B
O
– linear equation ratios for calculation of standard output DAC value.
A
O
, B
O
ratios are calculated automatically during the module operation initialization by standard output current
range data (CurrOutMin, CurrOutMax), measured parameter range (RangeParamMin, RangeParamMax) and
DAC saved value (DacOutMin, DacOutMax), corresponding to standard output range, at which calibration was
carried out (20% of CurrOutMax, CurrOutMax).
Note. If one of calibration value pairs (20% of CurrOutMax, CurrOutMax or RangeParamMin,
RangeParamMax or DacOutMin, DacOutMax) is equal to zero, or they are equal, then A
O
, B
O
ratios are not
calculated and taken equal to zero (DAC
OUT
value is always equal to zero).
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VIBROBIT MK40 Specifications

General

Brand	VIBROBIT
Model	MK40
Category	Control Unit
Language	English