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SIGNAL CONVERTER (v4) SC120

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					                                              SIGNAL CONVERTER (v4) SC120
DESCRIPTION
The SIGNAL CONVERTER SC120 is a universal, low cost, four-
wire signal conditioning module.
FEATURES:
• Signal conversion for all commonly used process control
   signals.
• Signal inversion for applications where the output has to
   decrease for increasing input (reverse action).
• Signal repeater where a process signal has to be buffered to
   provide increased loop drive (input load 51 Ω, output load 900
   Ω at 20mA).
• Signal filtering for fluctuating input signals. The "ramp option"
   allows for time constant selection by the user.
• Gain and bias (scaling) adjustments to amplify or zero shift a
   portion of the input signal (signal splitting, ratio operation).
• Combination of 24Vdc loop supply with output scaling.
   For example: 4 - 20mA 2-wire input and conversion, re-
   powering to a 0 - 10Vdc signal.
• Optional versions include dual-input models for
            ⇒ addition or subtraction
            ⇒ minimum or maximum selection
• Other optional features are “track & hold” and “peak hold” operation with a maximum of 120 minutes
   holding time.
Various power supply choices are available varying from 240Vac down to 8Vdc, all provide power isolation.
 A special version of the SC120 is the PD122 POWER DRIVER. The power driver model is used in
conjunction with an external DC power supply to accommodate output drive of up to 2 amps as is common
with hydraulic solenoid drive applications. If a bipolar output is required then refer to the BSC133
BIPOLAR SIGNAL CONVERTER. Final calibration is trimmed using the front accessible 'offs' and 'span'
15-turn trim adjustments. The output signal level is indicated by a green L.E.D. on front, giving a clear
indication of module function, presence of signal and output loop closed (for current outputs only). All units
are fitted with a 0.1 second filter. This filter constant can be increased or decreased if required.
General Specifications
Size:                         52 W x 70 H x 110 D (mm).
Mounting:                     DIN-Rail, gear plate.
Termination:                  Screw terminals on front.
Protection class:             IP40 (IP65 Enclosure opt.).
Weight:                       0.300 kg.
Housing material:             Polycarbonate.
Accuracy:                     0.2% of span.
Front “OFFS” adjust:          ±20% typical
Front “SPAN” adjust:          ±20% typical
Temperature effect:           0.01% per °C.
Operating temp. range:        -10...+60°C.
Output load effect:           less than 0.2% up to max. load.
Output loop drive:            10mA into 0 - 1.8k Ω.
                              20mA into 0 - 900 Ω.
                              50mA into 0 - 360 Ω.
Input / output isolation:     None (use SIGNAL ISOLATOR SI132 if isolation is required).
Power requirement:            ac supply 4W, dc supply 3W.
Power supply isolation:       2kV r.m.s.
Electromagnetic compatibility: Complies with AS/NZS 4251.1 (EN 50081.1)

For input / output combinations refer to TYPE NO. DESIGNATION overleaf.




                  ANALOG PROCESS CONTROL SERVICES PTY. LTD.                   Fax 02 9555 1055
                  24 FRED ST, LILYFIELD 2040 N.S.W., AUSTRALIA                Tel 02 9555 1044      Page: 1
SIGNAL CONVERTER (v4) SC120                                                  No. DS12041 Issue: 3 4/07/02
TYPE NO. DESIGNATION                                                                                                            SC120 - X XX X X XX
Power Supply:
   1 = 240V 50/60Hz ±10%.                                                 *)    6 = 8 - 60Vdc Isolated.
   2 = 120V 50/60Hz ±10%.                                                 *)    7 = 48Vdc (use ‘6’).
   3 = 24V 50/60Hz ±10%.                                                  *)    8 = 60 - 240Vdc Isolated.
*) 5 = 12Vdc (use ‘6’)                                                    *)    9 = Other (Specify).
Input:
   Refer to MILLIVOLT TRANSMITTER MVT123 for inputs <100mV.

     04 = 0 - 100mV               (1M).                   12 = 0 - 5mA                     (220 Ω).             *) 20 = Other              (Specify).
     05 = 0 - 200mV               (1M).                   13 = 0 - 10mA                    (100 Ω).                21 = ±1V                (1 M).
     06 = 0 - 500mV               (1 M).                  14 = 0 - 20mA                    (51 Ω).                 22 = ±5V                (1 M).
     07 = 0 - 1V                  (1 M).                  15 = 0 - 50mA                    (20 Ω).                 23 = ±10V               (1 M).
     08 = 0 - 2V                  (1 M).                  16 = 4 - 20mA                    (51 Ω)#.                24 = ±20V               (1 M).
     09 = 0 - 5V                  (1 M).                  17 = 10 - 50mA                   (20 Ω).
     10 = 0 - 10V                 (1 M).                  18 = 0 - 100mA                   (10 Ω).
     11 = 0 - 1mA                 (1 k).                  19 = 1 - 5V                      (1 M).

     # Includes 24Vdc/22mA auxiliary supply on terminal 8.
Output:
     1 = 0 - 5V                   (50k Ω min).                               6 = 10 - 50mA (360 Ω max).
     2 = 0 - 10V                  (100k Ω min).                              7 = 0 - 10mA (1.8k Ω max).
     3 = 0 - 20mA                 (900 Ω max).                               8 = 1 - 5V ( 50k Ω min).
     4 = 4 - 20mA                 (900 Ω max).                            *) 9 = Other (Specify).
     5 = 0 - 50mA                 (360 Ω max).
Action:
  1 = Direct                                                                    2 = Reverse
Options:
  00 = None

*) 04 = Output ramp. (Data sheet DS12002).
*) 06 = Auxiliary supply 24Vdc/25mA max for 3-wire transmitters.
        (Data sheet DS12002).
*) 07 = Adder or Subtractor (both inputs 4-20mA signal).
        (Data sheet DS12002).
*) 08 = MIN or MAX selector (both inputs 4-20mA signal).
        (Data sheet DS12002).
*) 09 = Extended range on “OFFS” and SPAN” front panel trim pots.
        (Specify range).
*) 11 = Track and Hold (max hold 120 min). (Data sheet DS12011).
*) 12 = Peak Hold (max hold 120 min). (Data sheet DS12011).
*) 13 = External ratio adjust (0.5...1.5 typical), (Specify range.
        Data sheet DS12013).
*) 14 = Rate of decline (<10 min).
*) 15 = External Gain and Bias, (Specify range. Data sheet DS12015).
*) 16 = Triple input adder (3 x 4-20mA only) (Data sheet DS12016).
*) 17 = Quad input adder (4 x 4-20mA only) (Data sheet DS12016).
*) 18 = L.V.D.T. Input (Data sheet DS12018)
        Superseded use LVDT149.
*) 99 = Other (Specify).



*) Price Extra.
In the interest of development and improvement, A.P.C.S. Pty. Ltd. reserve the right to amend, without notice, details contained in this publication. A.P.C.S. PTY. LTD. will accept
no legal liability for any errors, omissions or amendments.




                         ANALOG PROCESS CONTROL SERVICES PTY. LTD.                                                              Fax 02 9555 1055
                         24 FRED ST, LILYFIELD 2040 N.S.W., AUSTRALIA                                                           Tel 02 9555 1044      Page: 2
SIGNAL CONVERTER (v4) SC120                                                                                                    No. DS12041 Issue: 3 4/07/02

				
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Description: SIGNAL CONVERTER (v4) SC120