Rice Lake Weighing Systems 882IS Digital Weight Indicator Fiber Optics to RS-422 Converter Owner’s Manual

August 5, 2024
RICE LAKE WEIGHING SYSTEMS

Rice Lake Weighing Systems 882IS Digital Weight Indicator Fiber Optics to

RS-422 Converter

Product Specifications

  • Product Name: 882IS Digital Weight Indicator
  • Model: Fiber Optics to RS-422 Converter (PN 196770)
  • Dimensions:
    • Length: 6.50 in
    • Width: 1.00 in
    • Height: 0.75 in
  • Maximum Distance for Applications: Up to 150 ft

Product Usage Instructions

Important Safety Information

  • Use anti-static protection for grounding and to protect components from electrostatic discharge (ESD).
  • Disconnect the enclosure from the power source before opening.

Fiber Optics Assembly

  1. Disconnect all power sources before opening the units.
  2. Cross-link the fiber-optic connections between the 882IS indicator and the RS-422 converter.
  3. Polish the fiber ends using the fiber polishing kit.
  4. Insert the fiber-optic cable through the locking nut and into the connector until seated properly.
  5. Screw the connector locking nut down to secure the fiber-optic cable in place.

Remote Power Source

  • If the source indicator has a digital input/output, it can provide 5V for powering the card.
  • Connector J3 provides connections for power/RS-422.

Frequently Asked Questions

Q: Where can I find replacement parts for the Fiber Optics of the RS-422 Converter?

A: Replacement parts can be found on our website at www.RiceLake.com. Refer to the part numbers and descriptions provided in the manual for ordering.

Q: What is the maximum distance for applications using the converter?

A: The converter can be used in applications up to 150 ft.

  • The fiber optics to RS-422 converter (PN 196770) takes fiber optic light and turns it into a signal for RS-422 communications.
  • The converter is located in an external FRP enclosure that is remotely powered and can be used in applications up to 150 ft.
  • Manuals are available from Rice Lake Weighing Systems at www.ricelake.com/manuals Warranty information is available at www.ricelake.com/warranties
  • IMPORTANT: Use anti-static protection for grounding and to protect components from electrostatic discharge (ESD) when working inside the enclosure.
  • WARNING: Disconnect the enclosure from the power source before opening.

Dimension

Fiber Optics Assembly

  • The fiber optics to RS-422 converter is equipped with a duplex fiber-optic port for communicating with an 882IS or 882IS Plus located in the safe area.
  • It provides electrical isolation and eliminates the use of I/O barriers commonly used in intrinsically safe systems. The optical fibers are plastic and the terminated ends must be properly polished before installation.
  • Refer to POF Polishing Kit (PN 197384), for complete instructions on polishing the fiber-optic ends. See Figure 1 on page 1 for the location of the duplex fiber-optic port in the fiber optics to RS-422 converter.
  • WARNING: Disconnect all power before opening the units being updated.
  • IMPORTANT: The fiber-optic connections between the 882IS and 882IS Plus indicator and the RS-422 converter need to be cross-linked.
  • The optical output of the 882IS indicator should be attached to the input of the RS-422 converter, and the indicator input to the module output.
  • Use the following steps for assembling the fiber-optic connectors of the fiber-optic to RS-422 converter.
  1.  Cut off the ends of the fiber-optic cable (150 ft length maximum), with a proper cutting tool such as a fiber-optic hot knife (PN 85548) or cutting block (PN 80892), ensuring no bends 90° or greater are in the cable.
    • NOTE: The cut end of the fiber-optic cable must be cut flush so that the core and outside insulation are equal. Core exposure can lead to failure.
  2. Polish the fiber ends per the fiber polishing kit.
  3. Insert the fiber-optic cable through the locking nut and into the connector until the core tip seats against the internal micro-lens; then back it out 1/16th in (1 mm).
  4. Screw the connector locking nut down to a snug fit, locking the fiber-optic cable in place.

Remote Power Source for Fiber Optics to RS-422 Converter

NOTE: If the source indicator has a digital input/output, it will provide 5V which can be used to power the card. Connector J3 provides connections for power/RS-422.

Table 1. J3 Power/RS-422 Connections

Pin Description
1 V+ (6 V–24 V)
2 V- (GND)
3 TX_RS422-
4 TX_RS422+
5 RX_RS422-
6 RX_RS422+

Replacement Parts

Item No. Part No. Description Qty.
1 197028 Enclosure, Machined FRP 1
2 85308 Backplate, FRP 1
3 73997 Bushing, Multiple Cable Gland 9mm – 3/8 NPT 2
4 15664 Reducing Gland, 9mm – 3/8 NPT 1
5 15655 Cord Grip, 3/8 NPT 3
6 15656 Locknut, 3/8 NPT 3
7 31595 Support Post, PC Board 9/16 in with Adhesive Backing 4
8 180633 Fiber Optic Board, RX/TX Option 1
9 178464 Seal Ring, 3/8 NPT, Nylon 3
10 153883 Connector, 6 Position Pluggable Screw Terminal 1
11 198338 Label, Wiring, Fiber Optic to RS-422 Converter Option 1
12 15650 Mount, Cable Tie 3/4 in 3
13 15631 Cable Tie, 3 in Nylon 6
14 197846 Power Supply, 1.5 W, 12 VDC Universal Input, 100-240 VAC (not
shown) 1
15 52342 Label, 4.0 x 1.25 1
16 14729 Bolt, 1/4 – 20NC x 3/4 Hex Head Bronze 1
17 14637 Nut, 1/4 – 20NC Hex Bronze Width Across Flats 1
18 33188 Connector, Ring Terminal, 1/4 in Stud Size 22-16 AWG 1
19 15149 Washer, Plain Std, 1/4 SST ID 1
20 15148 Washer, Lock 1/4 Regular Helical Spring SST ID 1
21 14642 Nut, 1/4 – 20NC Hex SST Width Across Flats 1

Documents / Resources

| Rice Lake Weighing Systems 882IS Digital Weight Indicator Fiber Optics to RS-422 Converter [pdf] Owner's Manual
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References

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