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Q404-1/2
DC Input Multi-channel Isolator


TECHNICAL SPECIFICATION (Q404-1/2)
Input Range: 0-10V
Impedance: >1MW
Protection: 120VAC without damage
Common Mode: 2000VAC, input to ground
Output Range: 4-20mA
Voltage Output Drive: 10mA (1000. min@10V)
LED Indication Green LED indicates power on
Output Accuracy < +0.1% of full-scale input typical,< +0.2% maximum @23C including linearity, repeatability and hysteresis
Adjustability Front accessed 10 turn, for adjustment of range for zero and span
Stability < 0.025%/C of full-scale maximum for full-scale and zero
EMC Compliance (CE Mark)
Emmissions: EN50081-1
Immunity: EN50082-2
Safety: EN50178
Isolation > 2000VAC between input and output and channel to channel
Response Time 100µSec, -3dB @ 3500Hz (bipolar); 25mSec (10 to 90%)
NOTE: Bi-polar ranges only. Special unipolar ranges do not support fast response.)
Power 10.8 to 26.4VDC, 2W per channel max.
Temperature Operating: -5 to 60°C (23 to 140°F)
Storage: -40 to 80°C (-40 to 176°F)
Humidity (non-condensing)
Operating: 15 to 90% (@45°C)
Soak: 90% for 24 hours (@60°C)
Wire Terminal Socketed screw terminals for 12-22 AWG
Agency Approvals CSA certified per standard C22.2 (File No LR 42272)
UL recognized per standard UL508 (File No E99775)
CE conformance per EMC directive

Operation
The ActionI/Q model Q404 operates as a four-wire transmitter; each channel derives its power from an independent, transformer isolated, DC to DC power source (10.8 to 26.4VDC). Typically a 12 or 24VDC source is used for power.

The Q404 has fixed input and output ranges and is configured as a single channel ( 1 in / 1 out) or dual (2) channel (2 in / 2 out). Standard input and output ranges in Table 1 are calibrated to rated accuracy. One range per module; two channels per module, maximum.

Calibration
  1. To check calibration, connect the input to a calibrated DC source. Connect the output to a DC voltage meter and the input power to a DC source (12V to 24V) capable of providing up to 0.5 Amps.
  2. Set the calibrator to the specified minimum DC input value and adjust the zero potentiometer for minimum (e.g. -10V) output.
  3. Set the calibrator to the specified maximum DC input value and adjust the span potentiometer for maximum (e.g. 0V) output.
  4. Repeat steps 2 and 3 to validate calibration to the output load.