GE 8201-HI-IS 8-channel Intrinsically Safe Analog Input, 4-20mA with Hart
8123-PI-QU
• 2 input channels with power supplies
or single quadrature input
• 1 Hz to 50 kHz signal capability
• Frequency & acceleration measurement
• 2-alarm/repeater retransmitted output
channels
• 2- and 3-wire pulse transmitter format
• Pulse counting (with gate control)
• Channels independently configurable
• Open circuit, short circuit and missing
pulse detection
MODULE SPECIFICATION
See also System Specification
INPUTS
PULSE/FREQUENCY
Number of channels
• 2
Frequency range
• 50 kHz
• In quadrature mode – 12.5 kHz
Accuracy (25°C)
• ± 0.05% of span
Temperature Stability
• 0.005% / °C
CONTROL GATE (FOR GATING CHANNEL 1 ONLY)
Switching thresholds
• 1.2 mA / 2.1 mA
Input impedance
• 1 kΩ
Supply voltage
• 8.1 V (nom.) at 8 mA
SENSOR INPUT CHARACTERISTICS
NAMUR 1
Switching thresholds
• 1.2 mA / 2.1 mA
Input impedance
• 1 kΩ
Pulse Input Module
2-channel pulse/quadrature input
Supply voltage
• 8.1 V (nom.) at 8 mA
CURRENT
Input signal
• 20 mA (max.)
Threshold
• Configurable in 8 levels
Input impedance
• 25 Ω
Open circuit current
• < 0.5 mA
Short circuit current
• > 21.5 mA
VOLTAGE
Input signal
• 0 - 24 V dc (50 V max.)
Threshold
• Configurable in 8 levels
Input impedance
• > 10 kΩ
Switching hysteresis
• 100 mV
SWITCH
Input voltage range
• 0 – 10 V dc
OUTPUTS
The outputs are open-collector type for separately
powered devices such as LED clusters, annunciators
or solenoids
Number of channels
• 2
OFF state voltage
• 30 V (max)
OFF state leakage current
• 10μA (max)
ON state voltage drop
• <1.0V @ 50 mA
ON state current
• 100 mA
Retransmission bandwidth
• 1 – 2000 Hz
CONFIGURABLE PARAMETERS
INPUTS
Channel
• Enable / Disable
Sensor type
• NAMUR prox. type (select low / high speed)
• Current pulse input
• Voltage pulse input
• Switch input

Frequency ranges
• 0.1, 0.3, 0.5, 1, 3, 5, 10, 30, 50, 100*
kHz
Sample period
• 20 ms to 200 s
Quadrature
• Enable / Disable
Threshold level
• User defined values
Triggering
• Rising edge / falling edge
Filtering
• Off, 1, 5, 20, 100 kHz
Alarms
• Frequency / acceleration
Alarm limits
• High / low
Alarm deadband (hysteresis)
• User defined value
Line fault detect
• Enable / Disable
Channel status
• Active / Inactive
Counter
• Enable / Disable
Counting direction
• Count up / Count down
* While measurements can be made in the upper half of this range,
the stated accuracy applies only to frequencies up to 50 kHz.
DISCRETE OUTPUT
Function selection
• Disabled
• High / low alarm
• Acceleration alarm
• Counter preset value reached
• Quadrature output (channel 1 only)
• Scaled retransmission (channel 1 only)
Retransmission scaling (K factor Channel 1 only)
• 1-256
AUXILIARY DISCRETE INPUT
Counter (channel 1)
• Start (count) / pause
DYNAMIC DATA (READ ONLY)
PROCESS VALUES
Frequency
• 16 bit unsigned
Count
• 32 bit signed
Acceleration
• 16 bit signed
STATUS VALUES
Frequency/acceleration alarms
• High / Low
• Missing pulse detect
Line fault detect
• Open / Short circuit
Quadrature direction
• 1 =clockwise, 2 =anti-clockwise