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Technical content
© 2016 Littelfuse Protection Relays & Controls Protection Relays Remote Indication and Monitoring www.littelfuse.com/rm2000 Rev: 1-A-062716 RM2000 SERIES
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 MotorSaver® 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 MotorSaver® or PumpSaver®. 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. Remote Monitor Wiring Diagram
Ordering Information
RM2000 Remote display monitor for 777 family relays RM2000-CBM+ Coal Bed Methane Special. Optimizes gas production from coal bed methane wells while protecting submersible pump RM2000-RTDW Includes additional input for ground-fault module
© 2016 Littelfuse Protection Relays & Controls Protection Relays Remote Indication and Monitoring www.littelfuse.com/rm2000 Rev: 1-A-062716 RM2000 SERIES
Features
Displays: JJ Average current, individual line currents and current unbalance JJ Current to ground JJ Average voltage, line-line voltages and voltage unbalance JJ Instantaneous power JJ Power factor JJ Last four faults JJ All parameters programmed into 777 MotorSaver® JJ Remaining restart delay times Controls: JJ Start and stop buttons JJ Key lock input to prevent setpoint changes JJ Change 777 setpoints from keypad The RM2000 is also equipped with a real-time clock, which allows access to the following motor management information (most readings can be reset): JJ Total motor run-time JJ Time and date of last four faults, along with voltage and current at time of trip JJ Time and date of last 10 motor starts JJ Total number of motor restarts JJ Minimum time between any two starts with time and date JJ Run-time since last start JJ kWh consumed JJ kVARs consumed Accessories RS485-RS232 Converter with cable & plug Allows RS485 devices to be connected to a PC via the RS232 (serial) port. Provides convenient terminal blocks for making signal and DC power supply connections. Pre-wired. RS485-USB Converter with cable & plug/RS232:USB Allows RS485 devices to be connected to a PC via the USB port. Provides convenient terminal blocks for making signal and DC power supply connections. Pre-wired. Solutions Software: Solutions-M Software features include data logging, real-time data monitoring and fault and event monitoring. Specifications Input Characteristics Control Voltage 115VAC ±10%; 50/60Hz Transient Protection (Internal) 2500V for 10ms Functional Characteristics Communication Port #1 for 777 Port #2 for PC, PLC, etc. Baud Rate 1200-28800 1200-28800 Setup Even Parity None, Odd, or Even Parity
1 Stop Bit 1 or 2 Stop Bits
Protocol Modbus RTU Modbus RTU Serial Interface RS-485 RS-485 Available Addresses 01 A01-A99 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) Contact Material Silver/Tin Oxide Output Characteristics (RM2000-RTDW version only) Pilot Duty Rating 240VA @ 120VAC General Purpose Rating 5A @ 120VAC General Characteristics Ambient Temperature Range Operating -20° to 70°C (-4° 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 Marks UL UL508 (File #E68520) CSA C22.2 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 Lighting LED Backlight Keypad Eight 0.5” stainless steel dome buttons for tactile feedback Mechanical Life 100,000 actuations Overlay Material Polyester UV Exposure w/o degradation 2000 hrs. Terminal Torque (depluggable terminal block) 3 in.-lbs. Dimensions H 162.56 mm (6.4”); W 154.94 mm (6.1”); D 27.94mm (1.1”) Mounting Method Surface mountable on backplane using 4 screws