Rice Lake 880 Performance Series Indicator/Controller Technical/Service Manual User Manual
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880 Technical/Service Manual
SCALE Menu
Parameter
Choices
Description
GRADS
10000
1-100000
Graduations – specifies the number of full scale graduations if SPLIT=OFF. (For multi-range and
multi-interval scales (SPLIT is not
OFF), the GRADS value is derived from the capacity and
display divisions specified for the range or interval.)
The value entered must be in the range 1–100000 and should be consistent with legal
requirements and environmental limits on system resolution.
To calculate GRADS, use the formula: GRADS = Capacity / Display Divisions.
Display divisions are specified under the FORMAT submenu.
SPLIT
OFF
2RNG
3RNG
2INTVL
3INTVL
Multi-range/Interval – specifies whether the scale is full-range (OFF), multi-range (2RNG, 3RNG),
or multi-interval (2INTVL, 3INTVL). For multi-range and multi-interval scales, see the submenu
shown in Figure 3-9 and parameter descriptions in Table 3-6.
FORMAT
Primary
Format
See Figure 3-9 for menu structures. For standard scales see “If SPLIT = OFF”, for multi-range/
interval scales see “If SPLIT = 2RNG, 3RNG, 2INTVL, or 3INTVL”.
ZTRBAN
0
0.0-100
Zero Track Band – automatically zeroes the scale when within the range specified, as long as the
input is within the ZRANGE and scale is at standstill. Specify the zero tracking band in ± display
divisions. Maximum legal value varies depending on local regulations.
ZRANGE
1.900000
0.0-100
Zero Range – selects the range within which the scale can be zeroed. The 1.900000 default
value is ±1.9% around the calibrated zero point, for a total range of 3.8%. Indicator must be at
standstill to zero the scale. Maximum legal value varies depending on local regulations.
MOTBAN
1
0-100
Motion Band – sets the level, in display divisions, at which scale motion is detected. If motion is
not detected for the time defined by the standstill parameter, the standstill symbol lights. Some
operations, including print, tare, and zero, require the scale to be at standstill. Maximum legal
value varies depending on local regulations.
If this parameter is set to 0 the standstill annunciator is always lit; operations normally requiring
standstill (zero, tare, print) are performed regardless of scale motion. If 0 is selected, ZTRKBND
must also be set to 0.
OVRLOA
FS+2%
FS+1D
FS+9D
FS
Overload – Determines the point at which the display blanks and an out-of-range error message
is displayed. Maximum legal value varies depending on local regulations.
SSTIME
10
1-65535
Standstill Time – specifies the length of time the scale must be out of motion, in 0.1-second
intervals, before the scale is considered to be at standstill.
DSPRAT
1
1-80
Display update rate. Specifies the display update rate, in the number of 100-millisecond intervals
between updates.
SMPRAT
30HZ
60HZ
120HZ
240HZ
480HZ
960HZ
7.5HZ
15HZ
Sample rate. Selects measurement rate, in samples per second, of the analog-to-digital
converter. Lower sample rate values provide greater signal noise immunity.
Settings of 120Hz or above may be too fast to provide the desired stability in some static
weighing applications.
DFSENS
LIGHT
MEDIUM
HEAVY
Digital filtering sensitivity – the amount of influence the current A/D cycle has on the running
averaged value. The Light setting will respond quicker to an applied weight to immediately
impact the displayed value. Medium and Heavy settings are for applications where weighing
times are longer and expected weight changes are larger.
DFTHRH
0
0-99999
Digital filter cutout threshold – controls the response of the filter and must be set above the noise
disturbances in the system. Value is in grads.
Table 3-5. Scale Menu Parameters