Controlli DG501C, Руководство пользователя

Страница: 12 / 33

1
st
Issue 09/05 12 DMP026E
Analogue Outputs (AO)
AOs, 1 through 4, supply from 0 to 10Vdc to modulate a voltage-controlled device, i.e. valve
and/or damper actuator applications.
•
Minimum input impedance for a device or actuator operated by an AO is 10K
Ω
.
•
The maximum current that a 0-10Vdc output can source is 1mA.
1. Review Precautions section.
2. Connect positive signal wire to desired output terminal (19, 20, 21 or 22).
3. Connect negative signal wire to one common (0V) terminal.
Power Supply Wiring
Note:
•
This product contains a non-isolated half-wave rectifier power supply and must not be
powered by transformers used to power other devices containing non-isolated full-wave
rectifier power supplies.
•
24Vac power wiring can be intermixed with DO wiring.
•
Twisted or untwisted cable can be used for power wiring.
Power Wiring
1. Review Precautions section.
2. Ensure that the controller 0V terminal is connected to Earth before connecting the power
wiring to the controller.
3. Connect power ground wiring to terminal 1 (0V 24G).
4. Connect power 24Vac wiring to terminal 2 (24H).
Primary
24Vac
Secondary
EN 60742
Ground frame of
Transformer
connected to
Earth