JH4400I: Output = (A+B+C+D)/4
JH4401I: Output = (A+B+C)/3
JH4402I: Output = (A+B)/2
JH4408I: Output = A-B
The JH4400 Series offers DC outputs representing 2, 3 or 4-input sums or (A-B) difference. Input and output ranges need not be the same; for example, the inputs could be 0/10Vdc while the output could be 4/20mA. These are fixed-range devices, precisely calibrated to your specified ranges at the factory.
Red-green Quick-Check LEDs give a quick indication of the relative output. Red is brighter at the low end, green at high, while at mid-scale both are approximately equal. Red-only indicates offscale low while green-only indicates offscale high.
Input/output isolation is standard. (The inputs are not isolated from each other.) Available options include, AC or DC power choices and reverse-action Option RT (decreasing output with increasing inputs).
Standard calibration provides low-end output (0%) when all inputs are at 0%. Full-scale output (100%) occurs when all additive (+) inputs are at 100% and all subtractive (-) inputs are at 0%. Standard calibration assumes the output always will be 0% or higher, never negative. All calculations are on a percent-of-span basis. With 4/20mA, for example, 4mA = 0% and 20mA = 100%. Likewise, for –5/+5V, -5V=0%, 0V=50% and +5V=100%.
Nonstandard setups and calibrations are possible. For example, we have created a number of specials providing unequal input weightings (such as A+2B+0.5C+0.5D), and with up to six inputs. Please contact the factory with your requirements.
Select your model number from the list above. Add suffix –AC for AC power or –DC for DC power.
Specify any DC voltage or current range allowed by the "Input Capabilities" spec, below.
Specify any DC voltage or current range allowed by the "Output Capabilities" spec, below.
Specify 115Vac, 230Vac, 12Vdc or 24Vdc.
Specify Option RT.
4/20mA "current sink" output stage for connection to devices whose inputs provide 24Vdc loop excitation. Specify Option LPO.
Specify Option "U"
These transmitters plug into any standard 11-pin circular ("octal") relay socket. JH Technology offers a socket suitable for DIN-rail or surface mounting (see the Accessories page). Pin connections are:
Pin 1: Power (AC or, if DC power option, DC plus).
Pin 2: No connection.
Pin 3: Power (AC or, if DC power option, DC minus).
Pin 4: A input (plus).
Pin 5: Input common (minus).
Pin 6: B input (plus).
Pin 7: C input, if used (plus).
Pin 8: D input, if used (plus).
Pin 9: Output plus.
Pin 10: Output minus.
Pin 11: No connection.
100mV minimum span, +/-20V maximum input. Offset ranges are allowed.
(Input Impedance: 200kohms or greater.)
1mA minimum span, +/-100mA maximum input. Offset ranges are allowed.
(Input Resistance: Varies with input range. Contact factory for details. 62 ohms for 4/20mA input.)
1 volt minimum output span, -10 to +15V absolute limit. Offset ranges are allowed. Maximum output load, 10mA (1Kohm at 10V output).
1mA minimum output span, 0 to +25mA absolute limit. Positive offsets are allowed, negative outputs are not. Output drive capability, 24V (1,200 ohms max. at 20mA output).
+/-0.1% of span or better.
Zero and span each are adjustable approx. +/-15% of span.
+/-0.05% of span or better.
Under 100 milliseconds.
Power, 1,500Vac rms (2,100V peak). Input/Output 1,000Vac rms (1,400V peak). Note: The inputs are not isolated from each other.
-10 to +60 deg. C (14 to 140 deg. F).
+/-0.02% of span per deg. C, or better.
AC, 115 or 230Vrms, 50/60Hz, 2.5V-A. DC, 12 or 24V, 2.5W.