Minebea Intec PR 1626/60 - Load Cell Interface Details; Secure Area Interface Specifications

8.3.1 Load Cell Supply (Excitation)
PR 1626/60 PR 1626/61
Voltage U
DC
= ±6 V (nominal)/≤80 mA
symmetrically to ground
U
DC
= ±3.75 V (nominal)/≤92 mA
symmetrically to ground
Load cell input
impedance
>150 Ω; this corresponds to e.g:
1× load cell with R
LC
= 350 Ω
4× load cell with R
LC
= 650 Ω
6× load cell with R
LC
= 1000 Ω
>80 Ω; this corresponds to e.g:
4× load cell with R
LC
= 350 Ω
6× load cell with R
LC
= 650 Ω
8× load cell with R
LC
= 1000 Ω
Symmetry ≤24 mV ≤24 mV
Tolerance range U
DC
= ±5.5 V… ±6.3 V U
DC
= ±3.25 V… ±3.95 V
Max. current ≤110 mA @ short circuit ≤110 mA @ short circuit
Tk +8 mV/K @ ±6 V +3 mV/K @ ±3.75 V
8.3.2 Measuring voltage input (from the Load Cells)
V
meas.
(max), max. voltage 37.2 mV (dierential)
8.3.3 Sense voltage input (from the Load Cells)
PR 1626/60 PR 1626/61
V
sense
(max),
max. voltage
±6 V nominal
(with ref. to ground)
±3.75 V nominal
(with ref. to ground)
8.4 Interface to secure area
The non-intrinsically safe terminal contacts 16–30 (Non-Ex connections) are intended for
connections in non-potentially explosive atmospheres.
8.4.1 Measuring Voltage Output (to the Instrument)
V
meas.
(max) 37.2 mV (dierential)
Tk
0
≤0.05 µV/K (@ 0 … +40 °C and 1 mV/V)
TK
Span
≤5 ppm/K (@ +23 °C, 30000 d and 1 mV/V)
8.4.2 Sense Voltage Output (to the Instrument)
PR 1626/60 PR 1626/61
V
sense
(max),
max. voltage
±6 V nominal (with ref. to ground) ±3.75 V nominal (with ref. to
ground)
8 Technical data Intrinsically safe load Cell interfaces PR 1626/60, ../61
Minebea Intec EN-19