GE Bently Nevada 1900/27 - Monitor Controls; To 20 Ma Interface Specifications

1900/27 Vibration Monitor Operation and Maintenance Manual
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5.1.8 Monitor Controls
Display Mode Switch: Three positions: Normal, Alert Setpoint, and Danger
Setpoint. Controls what is shown on LCD display.
Relay Mode Switch: Two positions, Normal and BYPASS, control whether
the monitor is in normal or Bypass mode.
Reset Button: Push to reset latched relays and flashing LEDs.
Configuration Switch: Used to set Alert and Danger Relay Time Delay, Alert
relay drive conditions, English or metric display units,
and to initiate a monitor self test.
5.1.9 4 to 20 mA Interface Specifications
Fullscale Range: 2 in/s
pk
(50.8 mm/s
pk
)
Overrange: 2.5 in/s
pk
(63.5 mm/s
pk
)
Frequency Response: 10 Hz to 1 kHz
NOT OK Signalling: Output clamped to less than 3 mA during monitor
NOT OK
Input Voltage Range: 12 V
DC
minimum
36 V
DC
maximum
Galvanic isolation: Optical, 1000 Vac, 707 Vdc.