RICE LAKE 1280 Enterprise Series Scale Card Installation Guide

RICE LAKE 1280 Enterprise Series Scale Card

Second Generation Single A/D Scale Card Installation

The Second Generation Single A/D Scale Card (PN 220026) provides a single scale channel. The 1280 can support up to eight scales. The configuration of each scale is stored both on the card and in the indicator’s memory. The CPU board will rewrite the calibration to the A/D scale card when replacing or swapping installed cards. There are two generations of scale cards, This document describes the second generation scale card. See Table 1 for a comparison between the scale card generations:

Card Generation| Channels| Card PN| Identifying Characteristics
---|---|---|---
First Generation| Single| 164085| green circuit board, slide switch, one scale channel
Second Generation| Single| 220026| blue circuit board, push button, one scale channel

Manuals are available from Rice Lake Weighing Systems at www.ricelake.com/manuals Warranty information is available at www.ricelake.com/warranties

The included parts kit contains items used for the installation of the card. Items listed for stud grounding of the shields pertain to the panel mount enclosure. See the 1280 technical manual (PN 167659) for more information on grounding the shield.

WARNING: Always disconnect power before opening the indicator. The option card is not hot-swappable.
CAUTION: Use a wrist strap to ground yourself and protect components from electrostatic discharge (ESD) when working inside the indicator enclosure.

1. Open the indicator as instructed in the 1280 technical manual.
2. Remove a slot cover plate from the controller assembly to open a slot for the card.
3. Remove protective tape from pins J3 on the option card prior to installation. Make sure the pins are clean of the sticky residue by carefully wiping them with a cloth dampened with rubbing alcohol.NOTE: To use a 6-wire load cell cable (with sense wires), remove jumpers JP1 and JP2 before installing the cord to J1. To use a 4-wire connection, leave jumpers JP1 and JP2 on.
4. Align the card to the slot; the screw hole in the faceplate of the card should align with the screw hole on the controller assembly.
5. Slide the card into the top and bottom grooves of the slot. Push the card until it is securely seated in the backplane.
6. Secure with screw 4-40 NC x 1/4 (provided).
7. Route the cable through the cord grip to attach the cable from the scale to the A/D scale card.
8. Wire the load cell cable from the scale to the connector (from the parts kit) for J1 as shown in Figure 2 and Table 3.
9. When connections are complete, install a load cell connector on the A/D scale card.
   J1| Channel #1
   ---|---
   Pin 1| SIG+
   Pin 2| SIG-
   Pin 3| SENSE+
   Pin 4| SENSE-
   Pin 5| EXC+
   Pin 6| EXC-
   For 6-wire load cell connections to connector J1, remove jumpers JP1 and JP2.

NOTE: A sealing clip can be installed over the connector to provide a hardware seal that allows access while preventing the removal of the scale card and connector.
NOTE : The slot of the controller assembly selected for the installation of the card determines the scale channels that can be associated with a scale number.

Slot 1 = Slot 1 Channel 1Slot 1 Channel 2| Slot 4 = Slot 4 Channel 1Slot 4 Channel 2
---|---
Slot 2 = Slot 2 Channel 1Slot 2 Channel 2| Slot 5 = Slot 5 Channel 1Slot 5 Channel 2
Slot 3 = Slot 3 Channel 1Slot 3 Channel 2| Slot 6 = Slot 6 Channel 1Slot 6 Channel 2
10. Use cable ties from the parts kit to secure loose cables inside the enclosure as needed. Ensure no excess or loose cable is left inside the enclosure. 11. Ground the shield cable using the ground washer in the metal cord grip, or the grounding stud on the enclosure using the cable clamp included in the parts kit. See the 1280 technical manual for more information. 12. Tighten cord grips. Ensure the cord grip nut is also tight. 13. Reassemble and power the indicator. 14. Press on the weigh mode screen. The Main Menu displays. 15. Press for access to the Configuration menu.
NOTE: Access to the Configuration menu may be restricted. Refer to the 1280 technical manual for more information.

16. Select to enter the scales menu and configure the single A/D scale card.
17. Select the scale number (1-8) to be configured from the selection field drop-down list.
18. Select and set the scale to the Analog Load Cell Scale. The Select Scale Hardware screen displays.
19. Select the slot and channel desired.
20. See the 1280 technical manual for calibration instructions.

LED Status Indicators

Specifications

• Excitation Voltage 10 ± 0.5 VDC,
• 16 x 350Ω or 32 x 700Ω load cells per A/D card
• Sense Amplifier Differential amplifier with 4- and 6-wire sensing
• Analog Signal Input Range –60 mV to 60 mV
• Analog Signal Sensitivity 0.3 uV/grad minimum @ 7.5 H
• 1.0 uV/grad typical @ 120 Hz
• 4.0 uV/grad typical @ 960 Hz
• A/D Sample Rate 7.5–960 Hz, software selectable
• Input Impedance >35 MΩ typical
• Internal Resolution +/- 8388608 counts
• Weight Display Resolution 9,999,999
• Input Sensitivity 10 nV per internal count
• System Linearity ±0.01% of full-scale
• Zero Stability ±150 nV/°C, maximum
• Span Stability ± 3.5 ppm/°C, maximum
• Input Voltage Differential ±800 mV referenced to earth ground
• Input Overload Load cell signal lines ±10 V continuous, ESD-protected
• RFI/EMI Protection Signal, excitation, and sense lines protected

Rice Lake Weighing Systems Content is subject to change without notice. 230 W. Coleman St. Rice Lake, WI 54868 USA USA: 800-472-6703 International: +1-715-234-9171

References

• Rice Lake Weighing Systems
• Manuals | Rice Lake Weighing Systems
• Warranties
• Rice Lake Weighing Systems
• Manuals | Rice Lake Weighing Systems

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