The diagram to the right shows an example
of relay contact wiring.
The relay specifications are mechanical,
3A, & 250VAC/250VDC maximum.
TB2 contacts are “dry” (potential free), so
the load power supply is external, see the
example circuit to the right.
If the load is inductive, add a snubber (RC)
circuit across the relay contact terminals to
greatly extend the life of the relay contacts.
One can also connect the snubber across
the load in lieu of the contacts.
RELAY ASSIGNMENTS ON-BOARD (EI-2000S-CPU) &*EI-2000-EXP
METER K1 (CH1) K2 (CH2) *K3 (CH3) *K4 (CH4)
EI-2000S-CPU
EI-1000 (1-ch) SP-A (P510) SP-B (P511)
N/A N/A
EI-1000 (2-ch) SP-A (P510) SP-A (P520)
N/A N/A
EI-1000 (3 or 4-ch) SP-A (P510) SP-A (P520) *SP-A (P530) *SP-A (P540)
EI-2000 (1 or 2-ch) SP-A (P510) SP-A (P520)
N/A N/A
*K3 and K4 are available on the EI-2000-EXP board and are used by channel 3 and 4, respectively. N/A = Not available
RELAY ASSIGNMENTS EI-2000-IO
METER K1 (CH1) K2 (CH2) K3 (CH1) K4 (CH2)
EI-1000 (1 or 2-ch) EI-2000
SP-A (P510) SP-A (P520) SP-B (P511) SP-B (P521)
METER K5 (CH3) K6 (CH4) K7 (CH3) K8 (CH4)
EI-1000 (3 or 4-ch) SP-A (P530) SP-A (P540) SP-B (P531) SP-B (P541)
Note: Both the EI-2000-EXP and the EI-2000-IO are both installed in an expanded enclosure.
EI-2000-IO WIRING
P600 Analog output type selection
Analog output: rE (remaining weight), Gr (gross weight) , Gt
(gross total – sum of all active channels), and nt (remaining total
– sum of all active channels). This selects the weight that is
transmitted via the 4-20mA analog outputs.
P610 Analog output 20mA (full-scale) weight for channel 1
P620 Analog output 20mA (full-scale) weight for channel 2
P630 Analog output 20mA (full-scale) weight for channel 3
P640 Analog output 20mA (full-scale) weight for channel 4
A 20mA analog signal is transmitted when the weight is equal to
the value set by the above parameter. A current of 4mA is
transmitted when the weight, selected by P600, is equal or less
than zero. The analog outputs do not go below 4mA or above
20mA under normal operation.
P650: 4-20mA clip: NO will allow the mA output to proportionally
fall below 4mA (0 lb/kg) or rise above 20mA until hardware limits
are reached. YES will limit the analog output to the 4-20mA
range.
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