Littelfuse RM2000 Remote Monitor Description

The RM2000 Series is a motor-monitoring device to be used in conjunction with the 777 family of products (excluding the P1 Series), 77C family of products and the Model 601 voltage monitors, via Modbus protocol with a communications module. The RM2000/777 motor management system combines unsurpassed electronic motor protection and critical, user-friendly, motor monitoring.

The RM2000 has membrane keypad controls which allow both monitoring and control of a 777 relay through an RS-485 network using Modbus RTU protocol. A second communication port allows monitoring and control of up to 99 RM2000 devices from a PLC, DCS, or SCADA system or a PC with Solutions software installed. The RM2000 will act as a repeater for its motor protector when accessed from the host computer or PLC. In addition to the monitoring functions, the RM2000 can be used to reset a tripped relay.

The RM2000 is easily mounted remotely and improves safety for service and operations personnel by allowing them to control and monitor the device without opening the electrical cabinet. Using the RM2000 is a simple, cost-effective method for aiding compliance with arc flash safety regulations. The enclosure and keypad assembly is water and ultraviolet light resistant.

Littelfuse RM2000 Remote Monitor Features:

• Displays:
  • Average Current, Individual Line Currents and Current Unbalance
  • Current to Ground (Ground Fault Current)
  • Line-to-Line Voltages, Average Voltage and Voltage Unbalance
  • Instantaneous Power (Kw)
  • Power Factor
  • Last Four Faults
  • All Parameters Programmed into 777 MotoSaver®
  • Remaining Restart Delay Times
• Controls:
  • Start and Stop Buttons
  • Key Lock Input to Prevent Setpoint Changes
  • Change 777 Setpoints from Keypad
• The RM20000 is also Equipped with a Real-Time Clock, which Allows Access to the Following Motor Management Information (most readings can be reset):
  • Total Motor Run-Time
  • Time and Date of Last Four Faults, along with Voltage and Current at Time of Trip
  • Time and Date of Last 10 Motor Starts
  • Total Number of Motor Restarts
  • Minimum Time Between any Two Starts with Time and Date
  • Run-Time Since Last Start
  • kWh Consumed
  • kVARs Consumed

Littelfuse RM2000 Remote Monitor Specifications

Control Voltage . . . . . . . . . . . . 115VAC ±10%; 50/60Hz

Transient Protection (Internal) . . . . . . . . . . . 2500V for 10ms

Real Time Clock

• Battery Back-up Life. . . . . . . . . . . . .10 years @ 25°C without external power
• Last fault memory. . . . . . . . . . . . Stores up to 4 faults with time and date stamp,includes voltages and currents at time of trip
• Configuration . . . . . . . . . . . . . . . .Two independent electro-mechanical Form C (SPDT)

Ambient Temperature Range

• Operating. . . . . . . . . . . . . . . . . . . . . -40° to 70°C (-40° to 158°F)
• Storage . . . . . . . . . . . . . . . . . . . . . -30° to 70°C (-22° to 158°F)

Maximum Input Power . . . . . . . . . . . . . . . . . . . . .3 W

Class of Protection . . . . . . . . . NEMA 3R and/or UL Type 12

Relative Humidity . . . . . . . . . . . . . . . . . . . . . Up to 85%, non-condensing

Safety Mark

• UL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .UL508 (File #E68520)
• CSA . . . . . . . . . . . . . . . . . . . . . . 22.2 No. 14 (File #46510)
• CE . . . . . . . . . . . . . . . . . . . . . . . IEC 60947-6-2

Enclosure Material. . . . . . . . . . . . . . . . . . . . . Black polycarbonate

Display. . . . . . . . . . . . . . . . . . . . .Liquid Crystal with extended temp. range

Size. . . . . . . . . . . . . . . . . . . . .2 rows x 20 characters

Keypad. . . . . . . . . . . . . . . . . Eight 0.5” stainless steel dome buttons for tactile feedback

Mechanical Life . . . . . . . . . . . . . . . . . . . . .100,000 actuations

UV Exposure w/o degradation . . . . . . . . . . . . . . . . . . . . 2000 hrs.

Terminal Torque (depluggable terminal block) . . . . . . . . . . . . . . . . 3 in.-lbs

Weight . . . . . . . . . . . . . . . . . . . . . . . . 19.2 oz.

Mounting Method . . . . . . . . . . . Surface mountable on backplane using 4 screws

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Littelfuse RM2000 Remote Monitor Product Resources

Littelfuse RM2000 Remote Monitor Product Specifications

Littelfuse RM2000 Remote Monitor Engineering Specifications