Littelfuse RM2000, RM 2000 Series, Remote Monitor, 115VAC, SPDT Contact Form
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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, userfriendly, 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.
| Input Characteristics | |
| Control Voltage | 115VAC ±10%; 50/60Hz |
| Transient Protection (Internal) | 2500V for 10ms |
| Functional Characteristics | |
| Communication | Port #1 for 777(s) 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 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 |
| Lighting | LED Backlight |
| Keypad | Six 0.5” stainless steel dome buttons for tactile feedback |
| Mechanical Life | 100,000 actuations |
| Overlay Material | Polyester |
| V 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”) |
| Weight | 1.2 lbs. (19.2 oz., 544.31 g) |
| Mounting Method | Surface mountable on backplane using 4 screws |