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Action Instruments Limit Alarms

Limit Alarms are setpoint controllers that regulate industrial processes -- discrete, batch or continuous. Two-position controllers simplify processes through automation, and by removing personnel from tedious and possibly harmful environments.

Alarms are indicators of problems -- be they production line faults, process upsets, equipment failures or control system abnormalities. Limit alarms safeguard industrial facilities and workers by alerting and informing process personnel of abnormal conditions.

Action Pak® Limit Alarms AP1000 Series Selection Guide
Input Selection	Typical Application	Single-Trip DPDT RelayOutputs	Dual-Trip SPDT Relay Outputs
DC Voltage or Current (V, mV, A, mA) Includes LSI false trip circuitry, optimum filtering and conditioning to reduce susceptibility to transients and noisy operation.	DC motor/current limit, level/position control, Hi/Lo pressure alarm, power demand warning, totalization alarm, 2-channel comparator.	AP1080 (field configurable)	AP1090 (field configurable)
Thermocouple (Types E, J, K, R, S, T) Includes encapsulated cold-junction compensation (CJC) network, and burnout detection.	Heater/Coooler control, Hi/Lo temperature alarm, BTU monitor.	AP1280 (field configurable)	AP1290 (field configurable)
AC Voltage or Current (V, mV, A, mA) Includes optional 0.1W (5W) shunt resistor for high current input applications.	AC motor/current limit, AC power status monitor.		AP1690 (field configurable)

The AP1000 Series
As with all Action Pak Signal Conditioners, the 1000 Series Limit Alarms are compact, electronic plug-in modules that receive direct sensor inputs and operate directly from 120VAC line power or 24 VDC power on some models.

The AP1000 Series Alarms provide the broad range of limit alarm and control capabilities required in today's and tomorrow's industrial processes.

Alarm Flexibility
The AP1000 Series satisfies the need for compact signal-conditioning equipment that 1) provides the flexibility of a separate, individual limit or on/off control device, 2) accepts a variety of direct sensor or transducer inputs, and, 3) provides either Single-Trip, Latching or Dual-Trip relay outputs.

The Action Pak 1000 Series provides many combinations of sensor input, setpoint control and relay output selection for most conventional process and industrial alarm/control applications.

Hard Control/Analog Back
Factory automation systems run the risk of central failures. A failure in a central system can prevent proper actions for critical conditions, resulting in costly down times and possible personnel injury. Redundancy and reliability are important concerns that are best met with Hard Control/Analog Back (HC/AB) alarm systems.

The AP1000 Series dedicated single-channel limit alarm provides excellent single-point control with a proven record of reliability.

Setpoint Control
Setpoint adjustment are available to suit many needs.

• Single-Turn or 10-Turn screwdriver adjust.
• 10-Turn clockface dial, for precise settings.

Setpoints are adjustable over the entire span to assure full-range alarm capabilities.

Field Configurable Alarms
The popular AP1000 series Limit Alarms are now field configurable. The DC input AP1080/90, the thermocouple input AP1280/90 and the AC input AP1680/90 can all be configured — in the field — by setting dip switches for input range or type, alarm function (HI/LO) and alarm state (failsafe/non-failsafe). This minimizes spare parts inventory and provides an off the shelf solution for virtually any alarm function.

Three-Year & Lifetime Warranties
Action Paks which contain our Application Specific Integrated Circuit (ASIC) have seventy percent fewer internal connections for higher reliability and carry a Lifetime Warranty. Other Action Paks are backed by Action Instruments' exclusive three-year warranty.

DC Input, Field Configurable Limit Alarms

AP1080, AP1090

Provides Relay Contact Closure(s) at a Preset DC Input Level

Field Configurable Input Ranges for DC Voltage and Current
Setpoint(s) Programmable HI or LO
Exclusive “Dynamic Deadband” Prevents False Trips
Selectable Failsafe/Latching Operation
LED Trip Indicators
Selectable 120/240VAC Operation (9 to 30 VDC Available)
Lifetime Warranty

Ordering Info

Action Pak models AP1080 single setpoint and AP1090 dual setpoint limit alarms offer flexible, wide-ranging DC input capability. Voltage spans from 10mV to 200 volts and current spans from 1mA to 100mA can be field configured. Bipolar inputs are also accepted. Both models offer configurable latching, failsafe and HI/LO operation. The AP1080 and AP1090 also include 0.25%-50% adjustable deadbands and selectable 120/240VAC operation.

Action Pak® Thermocouple Input, Field Configurable Limit Alarms

AP1280, AP1290

Provides Relay Contact Closure(s) at a Preset Temperature Input Level

Easily Field Configurable Input Ranges for E, J, K, R, S and T Type Thermocouples
Setpoint(s) Programmable HI or LO
Exclusive “Dynamic Deadband” Prevents False Trips
Selectable Failsafe/Latching Operation
LED Trip Indicators
Selectable 120/240VAC Operation (9 to 30VDC Available)
Lifetime Warranty

Ordering Info

Action Pak models AP1280 and AP1290 limit alarms offer wide ranging input and flexible setpoint capability. They accept six popular thermocouple types with inputs ranging from -270°C (-450°F) to 3200°C (5800°F). The AP1280 provides a single-setpoint alarm while the AP1290 provides two independent setpoint alarms. The AP1280 and AP1290 also include 0.25%-50% adjustable deadbands and selectable 120/240VAC operation.

Action Pak® AC Input, Field Configurable Limit Alarms Models

AP1690

Provides Relay Contact Closure(s) at a Preset AC-Input Level

Field Configurable Input Ranges for AC Voltage for Current
Setpoint(s) Programmable HI or LO
Exclusive “Dynamic Deadband” Prevents False Trips
Selectable Failsafe/Latching Operation
LED Trip Indicators
Selectable 120/240VAC Operation
Lifetime Warranty

Action Pak model AP1690 dual setpoint limit alarms offer flexible, wide ranging AC input and relay output capability. Voltage spans from 100mV to 200VAC and current spans from 10mA to 100mAAC can be field configured. For current input spans of 1 to 5 Amps a 0.1W (0.1%) shunt resistor (Model #C006) is available. The model offers configurable latching, failsafe, and HI/LO operation. The AP1690 also includes 0.25% to 50% adjustable deadbands and selectable 120/240VAC operation.

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