Rice Lake 880 Performance Series Indicator/Controller Technical/Service Manual - Manual (Page 38)

32 880 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