EMERSON A6370 Overspeed Protection Monitor

EMERSON A6370 Overspeed Protection Monitor

Product Overview

The A6370 monitor is part of the AMS 6300 SIS overspeed protection system and is installed in a 19 inch rack (84HP width and 3RU height) in combination with the A6371 system backplane. A set of AMS 6300 SIS consists of three protection monitors (A6370) and one backplate (A6371), suitable for eddy current sensors, Hall element sensors, and magnetic (VR) sensors.

Main parameters

Sensor voltage supply

Nominal supply voltage: -24.5 V ± 1.5V DC, with short-circuit protection and electrical isolation.

Maximum current: 35 mA.

Signal input

Eddy current and Hall element sensors: Input signal voltage range of 0 V to 26 V (±), with reverse polarity protection, limited range of ± 48 V, frequency range of 0 to 20 kHz, typical input resistance value of 100 k Ω.

Magnetic (VR) sensor: Input signal voltage range minimum 1 Vpp, maximum 30 V RMS, frequency range 0 to 20 kHz, typical input resistance value 18 k Ω.

Digital input (backplane)

Input quantity: 4 (electrically isolated, all digital inputs are grounded), including test value 1, test value 2, enable test value, reset latch.

Logic low level: 0 V to 5 V; Logic high level: 13 V to 31 V (open circuit).

Typical value of input resistance: 6.8 k Ω.

Current output (backplane)

Output quantity: 2, electrically isolated (common ground).

Range: 0/4 to 20 mA or 20 to 4/0 mA.

Accuracy: ± 1% of full scale.

Maximum load:<500 Ω.

Maximum output current: 20 mA.

Digital output (backplane)

Output quantity: 7 (short circuit protection), including outputs 1 to 6, channel normal (COK).

Logic low level:<100 mV; Logic high level: -2 V (system supply voltage).

Maximum current: 25 mA.

Pulse output

Backboard: 3, open collector emitter, current limiting, electrical isolation; Maximum voltage 31.2 V; maximum current 16 mA at 24 V; frequency range 0 to 20 kHz.

Front panel: 1 (short circuit protection); Voltage ranging from 0 to 5 V (TTL signal); Frequency range 0 to 20 kHz; The typical output impedance is 10 k Ω.

Sensor output (front panel)

Output quantity: 1 (short circuit protection).

Voltage: 0 to 3.9 V, coefficient 0.15 ± 3%.

Frequency range: 0 to 20 kHz.

Typical output impedance value: 10 k Ω.

Communication

USB: Configuration interface, USB B-type.

RS 485: Up to 32 devices with baud rates of 38400, 57600, and 115200 baud.

Profibus DP (A6370D/DP only): up to 31 devices, with a data transmission rate of up to 12 Mbit/s.

Reaction time

Speed:<measurement time+8 ms.

The typical reaction time at 3000 min ⁻¹ is 35 ms in the "once per revolution" mode and 12.5 ms in the "automatic" mode.

Rotation direction:<3 * Input signal period+8 ms.