Absolute Process Instruments APD 1020 D _ DC input dual alarm. Isolated input
The APD 1020 accept a DC voltage or milliamp current input and provide a visual alarm indication and alarm relay contact outputs. The input type, range, and alarm types are factory configured. Front-accessible potentiometers are used to adjust alarm setpoint and deadband.
Features with all optional accessories:
- User adjustable setpoint(s)
- User adjustable deadband(s)
- Selectable sink/source mA input
- 15 V input loop power supply
- 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
- Universal power 85-265 VAC, 60-300 VDC
- D option for 9-30 VDC, 10-32 VAC power
Applications:
- Process Limit Backup Alarm
- Tank Level Alarm
- Process Signal Over or Under Alarms
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 | 0-100 mV to 300 VDC, 0-1 mA to 0-900 mADC, 4-20 mADC |
| Output | Two 8 Amp SPDT Relays |
| Power to input isolation | 1200 V |
| Common mode protection | 600 VACp or 600 VDC |
| Input Loop Power Supply | 15 VDC ±10%, regulated, 25 mADC, max. ripple, <10 mVRMS. May be selectively wired for sinking or sourcing mA input |
| Standard Relay Output | HI/LO alarm, non-latching, normal acting |
| Options Relay Output | LO/LO, HI/HI, LO/HI alarms, band alarms, latching, reverse acting |
| Setpoint | 12 turn potentiometer adjustable from 0 to 100% of span |
| Deadband | 12 turn potentiometer adjustable from 1 to 100% of span |
| Response Time | 70 milliseconds typical |
| Ambient Temperature Range and Stability | 10°C to +60°C operating ambient |
| Housing and Connectors | Four 4-terminal removable connectors, 14 AWG max wire size |
| Standard Alarm Configuration | 2 setpoints, 2 SPDT relays HI/LO alarms, non-latching, normal acting |
| Power | 9-30 VDC or 10-32 VAC 50/60 Hz, 2 W maximum |
