D4-VMD2

Standard device reads voltages from 0V - 150V DC (other ranges on request)

2 RELAYS

TThis device is used to display and monitor DC voltage.
Maximum & Minimum values are logged for 24 hours (updated every 60 min).
The latch facility may be de-activated for one or both the relays allowing one relay to be used for control (not latched), and the other as a latched alarm.
Use the “ScAL” parameter for calibration purposes, or to change the number of decimal places displayed (see notes).
Other features include adjust able signal damping, adjustable start-up and reaction delays, the ability to swap the relay’s functionality.
All settings may be locked & code protected to avoid changes from being made by unauthorised personnel.

ADDITIONAL FEATURES INCLUDE:

• adjustable RESOLUTION by adjusting the position of the decimal point and scale
• adjustable HYSTERESIS (DIFFERENTIAL)
• START-UP DELAY: allows the current to stabalize at startup before monitoring starts
• REACTION DELAY: prevent tripping for a pre-set time period
• LATCH facility: to force manual reset after fault
• LATCH can be enabled / disabled for each relay independantly (used when one relay is alarm relay)
• independantly invert relay action, ie close while in fault condition
• keypad lock with code

ADJUSTABLE PARAMETERS:

SCALE : 1V - 9999V

DECIMAL POINTER : 0.000 / 0.00 / 0.0 / 0

UPPER LIMIT : 1V - full scale

LOWER LIMIT : 1V - full scale

HYSTERESIS: 1V - full scale

START-UP DELAY: 0 - 99 seconds

REACTION DELAY (TRIPP DELAY): 0 - 99 seconds

CALIBRATION: 90% - 110%

RESPONSE TIME :<1-4 sec

ACCURACY:

 0.25%

CONTACT RATING:

 10A 250V AC

TECHNICAL INFORMATION:

• TRUE RMS by taking ± 180 readings per cycle
• all parameters are saved to non-volatile EEPROM memory, eliminating the need to re-program after power failure

LED INDICATION:

 relay status, Volts

Download User Manual Here