Rtd Input; Relay Outputs - ero electronic LDS Manuel De Service

RTD INPUT

RTD INPUT RTD INPUT RTD INPUT RTD INPUT
RTD RTD
1 2 3 1 2
Fig. 5 RTD INPUT WIRING
NOTE NOTE NOTE:
NOTE NOTE
1) Don't run input wires together with power
cables.
2) Pay attention to the line resistance; a resistance
higher than 20 Ω/wire may cause measurement
errors.
3) When shielded cable is used, it should be
grounded at one side only to avoid ground loop
currents.
4) The resistance of the 3 wires must be the
same.
lxs-1-0f.pmd 3
B) RELAY OUTPUTS B) RELAY OUTPUTS B) RELAY OUTPUTS B) RELAY OUTPUTS B) RELAY OUTPUTS
6
OUT 1
7
8
OUT 2
5
3
4
Fig. 6 RELAY OUTPUTS WIRING
The OUT 1 NO contact and the OUT 2 contact
areprotected by varistor against inductive load with
inductive component up to 0.5 A.
The contact rating of the OUT 1 is 3A/250V AC on
resistive load.
The contact rating of the OUT 2 is 1A/250V AC on
resistive load.
The number of operations is 1 x 10
rating.
NOTES NOTES NOTES NOTES NOTES 1) To avoid electric shock, connect power
line at the end of the wiring procedure.
2) For power connections use No 16 AWG
or larger wires rated for at last 75 °C.
3) Use cupper conductors only.
4) Don't run input wires together with
power cables.
The following recommendations avoid serious
problems which may occur, when using relay
output for driving inductive loads.
GB GB GB GB GB 3
16/01/2004, 9.29
NC
C
NO
C
NO
at specified
5