Relay Outputs - Mettler Toledo IND246 Guide D'installation

Passive Input
Selecting the inputs as passive (Figure 2-32) enables other devices such as PLCs
to provide the trigger voltage (typically 12 VDC or 24 VDC, maximum 30 VDC) to
turn the IND246 inputs "on".
An example of wiring to the passive inputs with the +V to the common is shown in
Figure 2-27.
Figure 2-27: Passive Input Connections

Relay Outputs

The relay outputs can switch up to 250 VAC or 45 VDC voltages at 1A maximum.
The relay outputs are not polarity-sensitive since they are dry contact outputs. An
example of wiring to the outputs is given in Figure 2-28.
IND246 Terminal Installation Manual
NOTES:
1. VOLTAGE: 5-30 VDC, 10mA MAXIMUM CURRENT.
VOLTAGE POLARITY MAY NOT BE REVERSED.
2. DO NOT BUNDLE INPUT WIRING WITH POWER WIRING OR
ANY OTHER HIGH ENERGY CABLES.
3. WIRE SIZE: 18 AWG (0.832 mm
24 AWG (0.205 mm
NOTES:
1. DRY CONTACT RELAYS.
2. RELAY CONTACT RATING:
AC: 24-250 VAC ,1.0 AMP. INTO RESISTIVE
LOAD
DC: 5-45 VDC ,1.0 AMP. INTO RESISTIVE
LOAD.
MAXIMUM SWITCHING POWER: 250VA, 30 W.
3. MAXIMUM OUTPUT CIRCUIT CURRENT = 3
AMPS.
4. ALL INDUCTIVE LOADS MUST BE
SUPPRESSED.
5. WIRE SIZE: 18 AWG (0.832 mm
Figure 2-28: Relay Outputs
2
) MAXIMUM
2
) MINIMUM
2
) MAXIMUM
2
24 AWG (0.205 mm ) MINIMUM
2-17