Eagle Microsystems EI-2000 User Manual
Page 12
EI-2000S-CPU
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-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.
l 1
l 2
l 3
l 4
P610 Analog output 20mA (full-scale) weight
for channe
P620 Analog output 20mA (full-scale) weight
for channe
P630 Analog output 20mA (full-scale) weight
for channe
P640 Analog output 20mA (full-scale) weight
for channe
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.