Rice Lake IQ plus 210, Installation Manual

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IQ plus 210 Installation Manual
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3. Next, measure –EXC to +SIG and –EXC to –SIG. Measured values between the excitation line and each of the signal
lines should be within 2–3

.
4. If the +EXC measurements (step 2) are Š 5% larger than the –EXC measurements (step 3), set the compensation
jumper in the ON position. If the +EXC measurements are < 5% greater (or are less) than the –EXC measurements,
set the jumper in the OFF position.
2.3.4 Serial Communications
To attach serial communications cables, connect communications cables to connector J7 as shown in Table 2-3. Use cable ties
to secure serial cable to the inside of the enclosure.
Use the SERIAL menu to configure serial communications. See
Section 3.2.4 on page 17 for configuration information.
2.3.5 Digital Inputs
Digital inputs (connectors J2 and J3) can be used to perform remote ZERO and UNITS key presses or to send serial data to a
printer (remote PRINT key function). The inputs are active (on) with low voltage (0 VDC) and can be driven by TTL or 5V logic
without additional hardware. Use the DIG IN menu to configure the digital inputs. See Section 3.2.5 on page 18 for information
about configuring the digital inputs.
2.3.6 Enclosure Reassembly
Once cabling is complete, position the backplate over the enclosure and reinstall the backplate screws. Use the torque pattern
shown in Figure 2-3 to prevent distorting the backplate gasket. Torque screws to 15 in-lb (1.7 N-m).
Figure 2-3. IQ plus 210 Enclosure Backplate
2.3.7 Board Removal
If you must remove the IQ plus 210 CPU board, use the following procedure:
1. Disconnect power to the indicator. Remove backplate as described in Section 2.3 on page 4 .
2. Remove connections to J5 (load cell cable), J7 (serial communications), J2 and J3 (digital inputs), J4 and J6 (piezo
button inputs), and J1 (setup switch). Remove blue and brown power input wires at J8. See Figure 2-2 on page 5 for
connector locations.
3. Remove the five nuts from the CPU board, then lift the board out of the enclosure.
To replace the CPU board, reverse the above procedure. Be sure to reinstall cable ties to secure all cables inside the indicator
enclosure.
J7 Pin Label Function
1 TxD RS-232 TxD
2 GND RS-232 Ground
3 RxD RS-232 RxD
Table 2-3. J7 Pin Assignments
S e t u p s w i t c h a c c e s s s c r e w
Fillister head screws
10
9
8
7
4
3
1
2
5
6
To r q u e b a c k p l a t e s c r e w s t o 1 5 i n - l b ( 1 . 7 N - m )
To r q u e p a t t e r n