RICE LAKE 920i Programmable HMI Indicator, Controller Installation Guide

920i Programmable HMI Indicator, Controller
Installation Guide

Panel Mount Enclosure Installation

This document contains drawings, replacement parts lists and instructions for installing panel mount models of 920i indicators.
See the 920i Installation Manual, PN 67887, for general installation, configuration and calibration information.
WARNING
The 920i has no on/off switch. Before opening the unit, ensure the power cord is disconnected from the power outlet.
Use a wrist strap for grounding and to protect components from electrostatic discharge (ESD) when working inside the indicator enclosure.
This unit uses double pole/neutral fusing which could create an electric shock hazard. Procedures requiring work inside the indicator must be performed by qualified service personnel only.

Installation

Use the dimensions shown in Figure 1 to lay out the panel cutout for the panel mount enclosure. See Figure 2 for enclosure dimensions.

Once the cutout has been prepared:

1. Insert the enclosure into the cutout from the front of the panel.
2. Install the reinforcing plate on the enclosure from the inside of the panel.
3. Install the clinching bracket on the enclosure from inside the panel.
4. Secure the bracket to the enclosure using the six 1/4″ screws provided in the parts kit (PN 71522).
5. Use the nine 1 1/2″ screws (PN 82425) to secure the clinching bracket to the panel door.

920i Programmable HMI Indicator/Controller Panel Mount Enclosure

Grounding

Except for the power cord, all cables routed through the cord grips should be grounded against the indicator enclosure.

1. Install the ground clamps on the grounding bar, using the ground clamp screws. Do not tighten the screws at this time.

2. Route cables under cabling bar and through the cord grips and the grounding clamps to determine the cable lengths required to reach the cable connectors.
   

3. Mark the cables to remove insulation and shield. See Stripping Cables on next page.

4. Route stripped cables through the cord grips and grounding clamps.

5. Ensure the shields contact the grounding clamps and tighten the ground clamp screws.

Stripping Cables

Foil Insulated Cable

1. Strip the insulation and foil from the cable 1/2 (15 mm) past the grounding clamp.
2. Fold the foil shield back on the cable where the cable passes through the clamp.
3. Ensure the silver (conductive) side of the foil is turned outward for contact with the grounding clamp.

Braided Shielding

1. Strip the insulation and braided shield from a point just past the grounding clamp.
2. Strip another 1/2 (15 mm) of the insulation to expose the braid where the cable passes through the clamp.

Load Cell Cables
Cut the shield wire just past the grounding clamp. Shield wire function is provided by contact between the cable shield and the grounding clamp.

Power Specifications

Constant current:1.5 A TRMS (115VAC);
1.0 A TRMS (230VAC)
Fusing
115 VAC and 230 VAC North American| 2 x 3.15A TR5 sub-miniature fuses
Wickmann Time-Lag 19374 Series
UL Listed, CSA Certified and Approved
230 VAC European| 2 x 3.15A TR5 sub-miniature fuses
Wickmann Time-Lag 19372 Series
UL Recognized, Semko and VDE Approved

See the 920i installation manual for additional specifications.

Parts Kit Contents

Table 1-1 lists the parts kit contents for the panel mount version of the 920i.

© Rice Lake Weighing Systems Specifications subject to change without notice.
230 W. Coleman St.  Rice Lake,
WI 54868 USA
U.S. 800-472-6703 Canada/Mexico 800-321-6703
International 715-234-9171
Europe +31 (0)26 472 1319

References

• Rice Lake Weighing Systems
• Rice Lake Weighing Systems

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