MFR 2 Series
Woodward’s MFR 2 Multifunction Relay - Synchronizer & Protection
Woodward’s MFR 2 Series multifunction relays offer a comprehensive
package of industrial grade protection and power management features.
These devices were designed for generators and switchgear equipment that
require independent protection, whether in isolated operation or in
parallel with the utility.
Closed PID control loops, by analog or
discrete bias outputs, offer control of voltage, frequency, active and
reactive power. Analog inputs, metering features via interface, and
analog outputs complement the MFR-2 Series. The MFR 2 Series can be
easily integrated and remote controlled in a PLC (programmable logic
controller) environment such as hydro or engine-generator set driven
applications.
Features include:
- Front Panel clear, readable 2-Line LCD Display with embedded synchronoscope
- True RMS sensing for generator protection and mains monitoring features
- Synchronization, including breaker monitoring
- Profibus communication (optional)
- Active and re-active power load sharing for up to 8 participants by CAN bus communication
- Counters for kWh, kvarh, operating hours, maintenance call
- 4 configurable discrete inputs and relay outputs
- CAN bus based communication
- Password protection
Packages
The MFR 2 Series is available with different feature packages. The following table shows the differences between these packages.
|
MFR 2 Series
|
Model
|
MFR 2S
|
MFR 2A
|
Package
|
PSV
|
PSVA
|
PSVT
|
PSV
|
Synchronization
|
●
|
●
|
●
|
---
|
Isolated single-unit operation
|
●
|
●
|
●
|
---
|
Mains phase/vector shift
|
●
|
●
|
●
|
---
|
Mains df/dt (ROCOF)
|
---
|
●
|
---
|
---
|
Discrete controller (V; Q)
|
●
|
●
|
●
|
---
|
Active power setpoint
(04/ to 20 mA)
|
---
|
●
|
---
|
---
|
Analog inputs
|
---
|
2
|
---
|
---
|
Analog outputs
|
---
|
2
|
---
|
---
|
Impulse output
(kWh/kvarh)
|
---
|
1
|
---
|
---
|
Specifications
Power supply
|
24Vdc
(+/- 30%))
|
Consumption
|
max.
15W
|
Ambient temperature (operation)
|
-20 to 70 °C / -4 to 158 °F
|
Ambient humidity
|
95 %, non-condensing
|
Voltage AC input
|
115Vac or 400Vac true RMS
|
Accuracy
|
Class 1
|
Current AC input
|
5A true RMS
|
Accuracy Iac
|
Class 1
|
Discrete inputs (isolated)
|
18 to 250 Vac or dc
|
Relay outputs
|
Isolated
|
Load (resistive)
|
2A@24Vdc and 250Vac
|
Analog outputs (isolated)
|
0/4 to 20 mA
|
Housing
|
|
Front panel mounting
|
Plastic
housing
|
Dimension (WxHxD)
|
144 × 72 × 122 mm
|
Sealing
|
IP21
|
Weight
|
Approx. 1,000 g (depending on model)
|
Applications
