The 601 series is a fully-programmable voltage monitor designed to protect three-phase motors from loss of any phase (single-phasing), phase reversal, low- or high-voltage, voltage unbalance, low- or high-frequency, and rapid cycling. When a harmful condition is detected, the 601’s output relay is deactivated after the specified trip delay. The output relay reactivates after power line conditions return to an acceptable level for the programmed restart delay (RD2). This monitor can be used as a stand-alone product or networked with an RM-1000, RM-2000, PLC, computer, or SCADA system. Eleven setpoints are viewable with the three-digit LED display or from a networked device:• low voltage • trip delay for voltage/frequency faults• high voltage • trip delay for single-phase faults• voltage unbalance • rapid-cycle timer (RD1)• low frequency • restart delay after all faults (RD2)• high frequency • type of restart after all faults• RS485 address (manual or automatic) Six parameters are viewable while the motor is running:• L1-L2 voltage • average voltage• L2-L3 voltage • voltage unbalance (%)• L1-L3 voltage • frequency When used with the RS485MS-2W communications module, the 601 can communicate with most Modbus RTU master devices. Voltage conditions can be monitored and setpoints can be changed remotely using Solutions software, an RM1000, RM2000, or other device. Applications• Oil rigs• Compressors and fans• HVAC• Heat, well, and sump pumps• Small conveyer motors The 601 can be preprogrammed prior to installation by applying at least 120 V to the L1 and L2 terminals. *575 V model Specifications Input Characteristics Frequency 50/60 Hz Functional Characteristics Programmable Operating Points LV - Low Voltage Threshold 170 V (450 V*) - HV Setting HV- High Voltage Threshold LV Setting - 528 V (660 V*) VUB - Voltage Unbalance Threshold 2–15% or off LF - Low Frequency Threshold 35 Hz - HF Setting HF - High Frequency Threshold LF Setting - 75 Hz TD1 - Trip Delay for Voltage/ Unbalance/Frequency Faults 1–50 seconds TD2 - Trip Delay for Single-Phase Faults 1–50 seconds RD1 - Rapid-Cycle Timer 0, 2–500 seconds RD2 - Restart Delay After All Faults 2–500 seconds #RF - Type of Restart Manual or Automatic ADDR - RS-485 Address A01-A99 Fixed Reset Points Overvoltage Rese 97% of HV Setting Low Voltage Reset 103% of LV Setting Voltage Unbalance Reset UB Setting -1% Low Frequency Reset LF Setting +0.6 Hz High Frequency Reset HF Setting -0.6 Hz Output Characteristics Output Contact Rating Pilot Duty 480 VA @ 240 V ac General Characteristics Temperature Range -20° to 70 °C (-4° to 158 °F) Accuracy Voltage ±1%Timing 5% ±1 second Repeatability Voltage ±0.5% Maximum Input Power 5 W Transient Protection (Internal) 2500 V for 10 ms Dimensions H 77.47 mm (3.05”)W 97.79 mm (3.85”) D 128.27 mm (5.05”) Weight 1.2 lbs. (19.2 oz., 544.31 g) Mounting Method Surface mount (4 - #8 screws) or DIN-rail mount Certification & Compliance UL UL 508 (File #E68520)CSA C22.2 No. 14 (File #46510)
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