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MODEL SC170 MODEL SC170 MODEL SC170 MODEL SC170 MODEL SC170 TWO-WIRE “SMART” TWO-WIRE “SMART” TWO-WIRE “SMART” TWO-WIRE “SMART” TWO-WIRE “SMART” SIGNAL CONDITIONER SIGNAL CONDITIONER SIGNAL CONDITIONER SIGNAL CONDITIONER SIGNAL CONDITIONER INSTALLATION AND OPERATION MANUAL INSTALLATION AND OPERATION MANUAL INSTALLATION AND OPERATION MANUAL...
It is simple to setup and operate the SC170 signal conditioner. It can be set up, with a smart local display, the LD-2, and a two-key keyboard, the KB-2.
UNPACKING Remove the Packing List to check off the actual equipment received. If you have any questions on your shipment, please call DYNISCO INSTRUMENTS Customer Service Department at (508) 541-9400. Upon receipt of shipment, inspect the container for any signs of damage in transit.
The XP-HDGC2-L, with its glass window, may be used when the display option is desired. These housings have appropriate mounting plates in the bottom to attach the SC170 in any of four orientations 90° apart. In addition special captive 6-32 machine screws are installed on the signal conditioner to facilitate installation and removal.
DYNISCO SC170 Manual 2.2.3 Pipe Mounting A stainless steel bracket, the PB-2, is available for mounting the weatherproof housing onto any 2" pipe in any of four operations. The housing is attached to the bracket as shown in Figure 2-5.
If the additional weather resistance is not required, the SC170 can be mounted directly on a flat surface by the two mounting ears found on these units. In applications requiring several signal conditioners, these can be mounted on the plate normally found inside of NEMA-4 rated rectangular metal enclosures.
The output terminals 9 and 10 are connected to a power supply having a nominal 24 Volt DC voltage and capable of supplying 100mA for the SC170. In the analog mode, these signal conditioners require a maximum of 23mA. The + OUT and - OUT terminals of the power supply.
DYNISCO SC170 Manual 2.3.3 Input Terminals 2.3.3.1 DC Milliampere Input Apply signal to 6(+) and 7(-). – Fig. 2-8 Typical Connection for Milliampere Input 2.3.3.2 DC Millivolt Input Apply signal to 5(+) and 7(-). Fig. 2-9 Typical Connection for Millivolt Input 2.3.3.3 DC Volt Input...
DYNISCO SC170 Manual 2.3.3.4 Potentiometer Connect high side to 4, center wiper to 5 and low side to 7. Fig. 2-11 Typical Connectionfor Slideware/Resistance 2.3.3.5 Three wire Ohms Connect high side of the resistor to 4, one wire from the low side to 5, and the second wire from the low side to 7.
250 ohm resistor. Now turn on the power supply. In about 5 seconds the SC170 loop current will settle to its normal value in the range of 4 to 20mA. In this configuration the SC170 is a loop-powered isolator.
LCD display module plugged in and attached to the top of the unit. The display option can be ordered already installed on the SC170 signal conditioner. Having the display option as part of the signal conditioner does not affect its operation in the analog mode and the description of the previous section applies.
DYNISCO SC170 Manual In the event of certain signal conditioner failure modes, the indication changes to S FAULT In the event of certain signal conditioner failure modes the indication changes to X FAULT This LCD display takes full advantage of the precision of these signal conditioners.
DYNISCO SC170 Manual Once the transmitter is powered up, it comes on in the normal operating mode that it was previously set to. The standard factory set-up puts the transmitter in the analog operating mode. With the standard factory set-up and no sensor connected, the LD-2 display will give the following indication: <...
DYNISCO SC170 Manual • Change the 20mA Full Scale Value (CHANGE FULL SCALE) • Change the Sensor Fail Safe detection (SELECT SENSOR FAIL SAFE) • Change the Transmitter Fail-Safe detection (SELECT XMITTER FAIL SAFE ) • Trim the 4.0mA output current (TRIM 4 MA) •...
DYNISCO SC170 Manual OHMS 3W (three wire ohms) (Slidewire or Potentiometer) SLIDEW One can stop at any one of the input type selections and pressing of ENTER key changes the signal conditioner mode to that ENTER input type. If no input change is desired, then without sequencing...
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DYNISCO SC170 Manual 4000.00 TENS ? and the leftmost digit position will start blinking (shown here in italics) asking if the tens position needs to be changed. To change the thousands position, start pressing the NEXT NEXT key and the leftmost digit will increment through 1 2 3 4 5 6 7 8 9 0.
DYNISCO SC170 Manual CHANGE FULL SCALE 200.00 200.00 200.00 CHANGE FULL SCALE ? ENTER. To change the full scale value press ENTER. The procedure for selecting Plus or Minus is identical to that described for changing the ZERO. ZERO. Similarly, the procedure for changing each of the digit positions is identical to that described for changing the ZERO.
DYNISCO SC170 Manual TRIM 4.0MA TRIM 4 MA ? This allows trimming of the 4.00mA output current. NOTE: This function is only for the purpose of adjusting the 4.00mA limit of the transmitter loop current to be exactly 4.00mA according to the plant’s local standard. This is NOT for the purpose of ranging the transmitter! If trimming the 4.00mA limit is still desired then press...
DYNISCO SC170 Manual Once the desired trim is reached, pressing ENTER will return ENTER to one of the corresponding TRIM 4MA screen. At this point TRIM 4mA one may still go back and do further trimming of the 4.0mA limit...
DYNISCO SC170 Manual 5.0 ACCESSORIES & INFORMATION Other accessories available from Dynisco are: LD-2 Local Display XP-HDC2-L Explosion/Weather proof Housing (No Display Option) XP-HDGC2-L Explosion/Weather proof Housing with mounting lugs and glass window PB-2 Pipe mount bracket (for 2" pipe) PS-2412 Power Supply, 24/28 VDC, 1.2/0.8A...
DYNISCO SC170 Manual 6.0 SPECIFICATIONS INPUT TYPE & RANGE: DC Milliamp -5.0 to +60.0 mA DC Millivolt -15.0 to +160 mV DC Volt -0.5 to +10.0 V Potentiometer, 3 wire 0.0 to 10.0 Kohm Resistance, 2or 3 wire 0.0 to 10.0 Kohm...
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LONG TERM STABILITY: Less than 0.05% of reading plus ±3.6 A per year. AUTOMATIC DIAGNOSTICS: Every 3 seconds the SC170 signal conditioner performs self-checks for zero, span, each open resistance lead, signal over the range condition and signal conditioner malfunction.
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The metal enclosure is totally sealed against moisture and provides excellent immunity to the effects of electromagnetic interference (EMI/EFI). For hazardous environments, the SC170 will fit within an available explosion proof housing. 24 24 24 24 24...
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