ALSP FREQUENCY ALARM (50 Hz minimum)

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Limit Alarms (rotary switch adj.) AL-UNIT

FREQUENCY ALARM

(50 Hz minimum)
Functions & Features
• Providing SPDT relay outputs at preset frequency levels
• Dual (Hi/Lo) trip
• Low-end cutout
• Energized or de-energized coil at a tripped condition selectable
• Rotary switch setpoint adjustments
• Enclosed relays
• Relays can be powered 110 V DC
• High-density mounting
Typical Applications
• Annunciator
• Various alarm applications

MODEL: ALSP-[1][2][3]-[4][5]

ORDERING INFORMATION

• Code number: ALSP-[1][2][3]-[4][5]
Specify a code from below for each of [1] through [5].
(e.g. ALSP-111-B/Q)
• Frequency range (e.g. 0 - 500 Hz)
• Specify the specification for option code /Q
(e.g. /C01/S01)

[1] INPUT

1: Dry contact
2: Voltage pulse

[2] SETPOINT 1 OUTPUT

1: Hi (coil energized at alarm)
2: Hi (coil de-energized at alarm)
3: Lo (coil energized at alarm)
4: Lo (coil de-energized at alarm)

[3] SETPOINT 2 OUTPUT

1: Hi (coil energized at alarm)
2: Hi (coil de-energized at alarm)
3: Lo (coil energized at alarm)
4: Lo (coil de-energized at alarm)

[4] POWER INPUT

AC Power
B: 100 V AC
C: 110 V AC
D: 115 V AC
F: 120 V AC
G: 200 V AC
H: 220 V AC
J: 240 V AC
DC Power
S: 12 V DC
R: 24 V DC
V: 48 V DC
P: 110 V DC

[5] OPTIONS

blank: none
/Q: With options (specify the specification)

SPECIFICATIONS OF OPTION: Q (multiple selections)

COATING (For the detail, refer to our web site.)
/C01: Silicone coating
/C02: Polyurethane coating
/C03: Rubber coating
TERMINAL SCREW MATERIAL
/S01: Stainless steel

GENERAL SPECIFICATIONS

Construction: Plug-in
Connection: M3.5 screw terminals
Screw terminal: Chromated steel (standard) or stainless steel
Housing material: Flame-resistant resin (black)
Isolation: Input to output 1 to output 2 to power
Setpoint adjustments: 10-position rotary switches (front); 0 – 99 % independently; 1 % increments
Remark: The ALSP has low-end cutout function below 2 – 5 % input. A setpoint below this equals 0 %.
Hysteresis (deadband): 0.7 – 2.5 %
Front LEDs: Red LED turns on when the coil is energized.
Power ON timer: Relays de-energized for approx. 2 seconds after power is turned on.
Low-end cutout: 2 to 5 %

INPUT SPECIFICATIONS

Frequency range: 0 – 50 Hz through 10 kHz
Pulse width (time) requirement: Duty ratio 20 – 80 % at 100 % input
■ Dry Contact: Mechanical contact or open collector
Sensing: Approx. 7.5 V DC @1 mA
ON/OFF level: ≤ 200 Ω / 0.6 V for ON, ≥ 100 kΩ / 2 V for OFF
■ Voltage Pulse: Square or sine waveforms
Input pulse sensing: Capacitor coupled; detecting pulse rise
Input amplitude: 2 – 50 Vp-p
Input impedance: 100 kΩ min.

OUTPUT SPECIFICATIONS

■ Relay Contact: 100 V AC @ 1 A (cos ø = 1)
120 V AC @ 1 A (cos ø = 1)
240 V AC @ 0.5 A (cos ø = 1)
30 V DC @ 1 A (resistive load)
Maximum switching voltage: 380 V AC or 125 V DC
Maximum switching power: 120 VA or 30 W
Minimum load: 5 V DC @ 10 mA
Mechanical life: 5 x 10⁷ cycles
For maximum relay life with inductive loads, external protection is recommended.

INSTALLATION

Power input
• AC: Operational voltage range: rating ±10 %,
50/60 ±2 Hz, approx. 2 VA
• DC: Operational voltage range: rating ±10 %, or 85 – 150 V for 110 V rating (ripple 10 % p-p max.)
approx. 2 W (80 mA at 24 V)
Operating temperature: -5 to +60°C (23 to 140°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Mounting: Surface or DIN rail
Weight: 370 g (0.82 lb)

PERFORMANCE in percentage of span

Setpoint accuracy: ±0.7 %
Trip point repeatability: ±0.05 %
Temp. coefficient: ±0.015 %/°C (±0.008 %/°F)
Response time: (0 – 100 % at 90 % setpoint)
approx. 2 seconds for 0 – 50 Hz
approx. 1 second for 0 – 100 Hz
approx. 0.5 seconds for 0 – 500 Hz
approx. 0.5 seconds for 0 – 10 kHz
Line voltage effect: ±0.1 % over voltage range
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 2000 V AC @1 minute (input to output 1 to output 2 to power to ground)