ISA Alarm Sequence F2AFirst-Out Alarm Indication with Acknowledgment and Automatic Reset
LED Test: Press and release the SILENCE and ACK pushbuttons to flash the channel indicator LEDs for a LED function test.
Full Function Test: Press and hold the SILENCE and ACK pushbuttons for 3 seconds to initiate a full function test.
External Connections: All three pushbuttons may be activated remotely via rear terminal connections.
CONNECTIONSPD158 connections for 85-265 VAC powered model.
MESSAGE LABELSAlarm message labels for the alarm annunciator may be factory printed at no charge, or field printed using a laser printer with clear self-adhesive labels.
Factory printed message labels may be ordered at any time by completing the following form.
SPECIFICATIONSExcept where noted all specifications apply to operation at +25°C.
GeneralDisplay: PD154; Four red LED channel indicators. PD158; Eight red LED channel indicators. One green LED power indicator.
Alarm Messages: Custom printed adhesive clear labels.
Area: PD154, 1.25" x .60" (32 mm x 15 mm), 4 messages PD158, 1.25" x .25" (32 mm x 6 mm), 8 messages
User specified size and length, up to 4 lines (PD154) or 2 lines (PD158) of 14 characters of size 9 pt fonts.
Programming Methods: Rear 4-position switch for sequence selection and horn operation. Three front panel pushbuttons for NO/NC input selection, sequence option, and operation.
Audible Alarm: 85 dB internal horn.
Noise Filter: 40 ms debounce on inputs and external pushbuttons.
Shared First-Out Systems: 1 ms unit-to-unit delay. Maximum of 200 units in the shared first-out system.
Non-Volatile Memory: All programmed settings are stored in non-volatile memory for a minimum of ten years if power is lost.
Power Options: 85-265 VAC, 50/60 Hz; 90-265 VDC, 20 W max; or 12-36 VDC, 12-24 VAC, 6 W max.
Fuse: Required external fuse: UL Recognized, 5 A max, slow blow. Up to 6 annunciators may share one 5 A fuse
Isolated Power Supply: 24 VDC ± 10% @ 200 mA max Standard on 85-265 VAC powered units only.
Isolation: 4 kV input/output-to-power line.
Overvoltage Category: Installation Overvoltage Category II: Local level with smaller transient overvoltages than Installation Overvoltage Category III.
Environmental: Operating temperature range: -40 to 65°C.
Storage temperature range: -40 to 85°C. Relative humidity: 0 to 90% non-condensing.
Connections: Removable screw terminal blocks accept 12 to 22 AWG wire.
Enclosure: 1/8 DIN, high impact plastic, UL 94V-0, front color: black
Mounting: 1/8 DIN panel cutout required. Two panel mounting brackets included.
Tightening Torque: Screw terminal connectors: Gray: 4.5 lb-in (0.5 Nm). Green: 5 lb-in (0.5 Nm)
Overall Dimensions: 4.68" x 2.45" x 4.19" (62 mm x 119 mm x 106 mm) (H x W x D)
Weight: 9.6 oz (272 g)
UL File Number: E160849; 508 Industrial Control Equipment
Warranty: 3 years parts & labor
InputsInput Types: NO or NC switches: No external excitation required.
Open collector transistor: Open circuit voltage approx. 3.3 VDC.
Logic Levels: LOW = 0 to 0.9 VDC, HIGH = 2.4 to 28 VDC
Update Rate: 41 ms following alarm state; 1 ms for alarm state clear.
Sequences: Input follower, ISA Sequences A, F1A, F2A, F3A, M, F1M, and F3M per ISA Standard ISA-18.1-1979 R2004.
Sequence Options: A, F1A, F2A, F3A, M, F1M, F2M, and input follower with selectable options -1 (silence pushbutton), -4 (no lock-in), and -6 (no horn) per ISA Standard ISA-18.1-1979 R2004
RelaysRating: 2 SPDT (Form C); rated 3 A @ 30 VDC or 3A @ 250 VAC resistive load; 1/14 HP @ 125/250 VAC for inductive loads.
Electrical Noise Suppression: A suppressor (snubber) should be connected to each relay contact switching inductive loads to prevent disruption to the microprocessor's operation. Recommended suppressor value: 0.01 µF/470 Ω, 250 VAC (PDX6901).
Relay Operation: Relay 1: Alarm state until alarm is acknowledged. Relay 2: Alarm state if any channel indicating alarm condition.
Fail-Safe Operation: Programmable independent for each relay.
Note: In fail-safe mode, relay coil is energized in non-alarm condition. In case of power failure, relay will go to alarm state.