Name: 9905-903 Wood module new in stock
Price: 3532 CNY
Availability: InStock

Description

1.9905-903 Specifications

Enclosure

NEMA 4 rating

Remote Reset

Support remote reset operation

Built-In Self-Test

Equipped with a built-in frequency generator

Enables individual testing of each unit while the prime mover remains on-line

Remote Overspeed Test

Configured with dedicated contacts

Allows individual testing of each unit during prime mover on-line operation

Key Lock

Prevents unauthorized personnel from performing programming or testing operations

Hot Replacement

Permits unit replacement without tripping the prime mover during device operation

Outputs

Provides a separate alarm output

Features an LED indicator to signal tripping of individual speed-sensing units

MPU Failure Indications

Equipped with separate LEDs for indicating MPU or MPU wiring failures

MPU Fail Timer

Triggers a timer immediately after a reset operation

Trips the prime mover if the prime mover speed does not reach the programmed value when the timer expires

Both timer duration and target speed are programmable parameters

MPU Fail Option

Each unit is configurable for MPU sudden loss scenarios

Option 1: Output both alarm and trip signals

Option 2: Output only an alarm signal

CPU Failure Indication

A dedicated LED indicator signals abnormal operation of any unit’s CPU

Speed-Sensing Frequency Range

100 Hz to 32 kHz

Trip-Point Frequency Range

250 Hz to 25 kHz

MPU Input Amplitude

Minimum 1 Vrms for frequency range 100 Hz to 25 kHz

Minimum 2 Vrms for frequency range 25 kHz to 32 kHz

Shutdown Contact Ratings

0.5 A resistive load @ 115 Vrms

Alarm Contacts

2 A resistive load @ 28 Vdc

0.3 A resistive load @ 115 Vrms

MPU Measurement Circuit Input Impedance

2 kΩ

Accuracy

0.05% of set point ± 2 Hz over the entire operating temperature range

Operating Temperature

-25 to +60 °C (-13 to +140 °F)

Display Operating Temperature

-15 to +60 °C (5 to +140 °F)

Sample Time

Speed sampling interval: 5 ms

Total Response Time

Maximum 40 ms

Humidity Resistance

Compliant with US MIL-STD-810D, Method 507.2, Procedure II

Vibration Resistance

Compliant with US MIL-STD-810D, Method 516.3, Procedure I

EMC (Electromagnetic Compatibility)

Radiated and Conducted Emissions

EN 55011, Class A

ESD (Electrostatic Discharge)

IEC 801-2: 8 kV air discharge; 4 kV contact discharge

Radiated Susceptibility

IEC 801-3: 10 V/m, frequency range 27–500 MHz

Fast Transients

EC 801-4: 2 kV direct application to power leads; 2 kV capacitive coupling to I/O leads

Surge

IEC 801-5: 500 V common mode and differential mode on DC input

Conducted Susceptibility

IEC 801-6: 10 V, frequency range 0.15–100 MHz, applicable to all leads

Weight

16 lb (7.3 kg)

2.9905-903 Operator Interface

Each speed-sensing unit of the ProTech 203 system is equipped with:

A touch pad for operation input

A 2-line × 16-character LCD display for status and parameter visualization

A potentiometer for adjusting overspeed test frequency

A single key switch is connected to all three speed-sensing units to switch the system between MONITOR mode and PROGRAM mode

Effectively prevents unauthorized parameter changes

9905-903 PDF
9905-903

9905-903

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