Load Monitors
overload or underload protection
PTM-5 Load Monitor
Overload and Underload Protection
Protect Equipment from: Overloads, Jams and Excess Torque, Underloads, Run-dry, Cavitation
The PTM-5 monitors AC motor active power to provide overload or underload protection of industrial drive systems such as: water & waste water drives, pumps, fans or conveyor systems. The system’s normal operating power, which is proportional to torque, is set through our auto-calibration mode. Once set, overload or underload alarms are set as a percentage of normal operating power.
With OLED display
SPECS
| PTM-5 POWER AND TORQUE – SPECIFICATIONS | ||
| Motor Voltage Ranges | PTM-5-1 120 or 230 VAC PTM-5-2 480 VAC | |
| Motor Current Ranges | Locked Rotor ≤8A, use PTM-5 internal current transformer. Locked rotor >8A use external 5A secondary current transformer. | |
| Frequency | 50-60 Hz | |
| Display | OLED; multi-color (alarm conditions displayed in red) | |
| Displayed Values | Running: % Full Load (kW) or Torque (N-m, lb.in, HP) | |
| Relays | Two Relays Programmable NO or NC. Contacts rated 10 A @ 30 VDC (Resitance); 10 A @ 250 VAC (General Purpose) | |
| Trip Delays | Programmable; 0-25 seconds (0-9.9 seconds in 0.1 second increments) | |
| Trip Hold (latch) | Programmable; push button reset, terminals for external reset contacts | |
| Start Delay | Programmable; 0.1-25 seconds (0-9.9 seconds in 0.1 second increments) | |
| Analog Output Option | 0-10 VDC or 4-20mA max. (jumper selectable) | |
| Enclosure | 1.772” x 3.071” x 4.252”; Noral/Lexan; Gray (RAL 7035) | |
| Weight | PTM-5-1 6.5 oz. (184 grams) for 120 or 230 VAC PTM-5-2 13 oz. (369 grams) for 480 VAC | |
| Wire sizes | Upper Input Power Terminals: 600V, 20A 12-22AWG, Cu wire only, 5lb-in max, 130C Lower Output Control Terminals: 300V 17.5A, 12-30 AWG, Cu wire only, 7lb-in max, 105C (Crimp ferrules, pins or tabs should be used) | |
| Mounting | 35/36mm DIN rail. Optional front panel mounting bracket assembly or NEMA 4X enclosure | |
| Environment | Operating Temperature: -4°F to 122°F (-20°C +50°C) | |
PTM-3 & 4 have been discontinued manuals are available in documentation.
Features and Benefits of the PTM-5 Power Monitor:
- Provides Overload and Underload Protection
- Less Expensive than Mechanical Torque Protection
- Fully Programmable to Meet Customers Conditions
- Alarm Signal Prior to Preset Max Torque Levels
- Displays Multiple Measurement Parameters Watts, KVA, Current, Volts and Torque
- Programmable and Displays Torque after Reduction
- Auxiliary Contacts Fully Programmable NO or NC
- Analog Output Capabilities for External Monitoring and Control
- Very Simple Setup
- C UL US Listed