Absolute Process Instruments APD 1720 D _ Frequency input dual alarm
Cecomp Electronics, APD 1720 D, Dual Alarm Trip, 0-25 Hz to 0-20 kHz Factory Configured Frequency Input Range, 9-30 VDC, 10-32 VAC Power
Features with all optional accessories:
- Input sensitivity adjustment
- User adjustable setpoint(s)
- User adjustable deadband(s)
- 8 Amp SPDT contacts
- Input LoopTracker LED
- Alarm status LEDs
- Alarm options: LO, HI/HI, LO/LO, band alarm
- Optional reverse acting
- Optional latching alarms
- Push to test/reset
- Remote push to test/reset
- Full I/O/power isolation
- Removable plugs
- DIN rail mount without tools
- Factory Set AC Input Range
- Alarm Test, Optional Reset Button
Applications:
- Machinery Speed Alarm
- Redundant or Backup Alarm
- Conveyor or Machine Malfunction Alarm
The APD 1720 D accept a frequency input and provides a visual alarm indication and alarm relay contact outputs.
The input is factory configured to a specific frequency input range. The input can be of any type as long as it has a minimum of 100 mV amplitude change and a minimum 5 microsecond pulse width. Input sensitivity is potentiometer adjustable.
Front-accessible potentiometers are used to adjust alarm setpoint and deadband.
LoopTracker and Alarm Status LEDs
API exclusive features include a LoopTracker LED that varies in intensity with changes in the process input signal.
A two red/green bi-color alarm status LED visually indicate alarm status. These LEDs provide a quick visual picture of your process at all times.
Output Test / Unlatch
API’s exclusive Output Test button can be used to verify the alarm and system operation and also provides the additional function of unlatching the alarm when the latching option has been ordered. This feature can be remotely operated.
The output test button greatly aids in saving time during initial startup and/or troubleshooting.
Specifications Table:
| Input | 0-25 Hz to 0-20 kHz |
| Output | Two 8 Amp SPDT Relays |
| Frequency Input Range | Factory configured, please specify input type and range.
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| Input Impedance |
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| Input Sensitivity/Hysteresis | Maximum sensitivity: ±25 mV typical, minimum sensitivity: ±2.5 V typical |
| Input Amplitude Range | 100 mV to 150 VRMS |
| Input Power Supply | 15 VDC ±10%, regulated, 25 mADC, max. ripple, <10 mVRMS |
| Input Protection | Normal mode: 200% of input rating, Common mode: 600 VDC or 600 VACp input to ground |
| Standard Alarm Configuration | 2 setpoints, 2 SPDT relays. HI/LO alarms, non-latching, normal acting |
| Setpoint | 12 turn potentiometer adjustable from 0 to 100% of span |
| Deadband | 12 turn potentiometer adjustable from 1 to 100% of span |
| Ambient Temperature Range and Stability | 10°C to +60°C operating ambient |
| Connectors | Four 4-terminal removable connectors, 14 AWG max wire size |
| Power | 9-30 VDC or 10-32 VAC 50/60 Hz, 2 W maximum |
