The Macromatic VMP048D is a voltage monitor relay. This 8 Pin plug-in relay has a nominal voltage of 48V DC. It checks for over or under voltage errors and has an output of 10A DPDT. The VMP048D has an adjustable pick-up voltage, a fixed drop-out time delay and a fixed drop-out voltage. The LED indicator on the VMP110D is red to show when the relay is energized or green when it is not. It uses an 8 Pin 70169-D octal socket and true RMS voltage measurement for more precise monitoring.
Note: Image is an approximation. Actual part may differ.
Specifications
- Relay Function- Over/Undervoltage
- Nominal Voltage- 48V DC
- Output- 10A DPDT
- Pick-up Voltage Range- 36-60V DC
- Drop-out Voltage Range- 27-57V DC (95% of Pick-Up)
- Setting Accuracy- Max Setting (Adjustable): +5%, -0%
Min Setting (Adjustable): +0%, -50%
Fixed Voltage Setting: +/- 2%
- Repeatability- <1%
- Load- <2VA
- Sensing Accuracy- Constant conditions within specifications: +/-2%
Variable conditions within specifications: +/- 5%
- Operating Temperature- -28 C to 65 C (-18 F to 149 F)
- Storage Temperature- -40 C to 85 C (-40 F to 185 F)
- Voltage Tolerance- +/-50% of Nominal Voltage
- Output Contacts- 10A @ 240V AC, 7A @ 30V DC, 1/4HP @ 120/240V AC, C300
- Life- Mechanical: 10,000,000 Operations, Full Load: 100,000 Operations
- Response Time- Pick-up: 0.5 sec, Drop-out: 0.5 sec
- Reset- Automatic
- Transient Protection- 2000V for IEC 61000-4-5 Level 3 (+/-2kV)
- Dimensions- 2.4" Height x 1.7" Width x 3.5" Depth
- Approvals- UL and CUL recognized, CE, UL & CUL listed (with Socket)
When the voltage stays above the preset pick-up voltage (36-60V DC) for a longer period than the pick-up time delay, then the unit is energized. If the voltage goes below the drop-out for greater duration than the drop-out time delay, then it de-energizes. The drop-out time delay is fixed at 0.5 seconds. Whether the VMP048D checks for undervoltage or overvoltage conditions is based on the kind of output contacts being used.
Overvoltage
Overvoltage protection utilizes a normally closed contact. The voltage has to stay below the max setting for the load to be energized while the relay itself remains de-energized. If the voltage goes above this level, the load de-energizes and the relay energizes until voltage goes back down.
Undervoltage
Undervoltage monitoring requires a normally open contact. The load stays on and the relay is energized so long as the voltage stays above the minimum setting. Voltage going below the minimum de-energizes both the load and the relay.
Macromatic VMP Series Relay Installation Instructions
VMP024D Over/Under DC Voltage Monitor Relay
