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model 2704 controller installation and operation handbook - Soliton

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<strong>2704</strong> Controller Controller Applications<br />

10.3.2. Example Of Humidity Controller Wiring<br />

Dehumidify<br />

valve<br />

DC<br />

4A<br />

1A<br />

HA<br />

L<br />

L<br />

PSU<br />

SCR for<br />

temperature<br />

control<br />

D1<br />

D2<br />

D3<br />

4B<br />

4C<br />

4D<br />

1B<br />

1C<br />

1D<br />

HB<br />

HC<br />

HD<br />

N<br />

D8<br />

N<br />

Humidify<br />

Solenoid<br />

D4<br />

D5<br />

D6<br />

5A<br />

5B<br />

5C<br />

2A<br />

2B<br />

2C<br />

HE<br />

HF<br />

JA<br />

E1<br />

E2<br />

AA<br />

D7<br />

5D<br />

2D<br />

JB<br />

AB<br />

Drive capability of<br />

digital outputs 1.5mA<br />

using the internal<br />

power supply or 40mA<br />

with an external supply<br />

VH<br />

V1<br />

V+<br />

V-<br />

6A<br />

6B<br />

6C<br />

6D<br />

3A<br />

3B<br />

3C<br />

3D<br />

JC<br />

JD<br />

JE<br />

JF<br />

AC<br />

BA<br />

BB<br />

BC<br />

Dry bulb<br />

temp<br />

Wet bulb<br />

temp<br />

In the above example the following modules are fitted. This will change from <strong>installation</strong> to<br />

<strong>installation</strong>:<br />

Module 1<br />

Analogue or relay to drive dehumidify valve<br />

Module 3<br />

PV input module for wet bulb temperature RTD<br />

St<strong>and</strong>ard Digital I/O Used as logic outputs for humidify solenoid valve <strong>and</strong><br />

temperature control SCR<br />

St<strong>and</strong>ard PV Input For the dry bulb RTD used for the temperature control <strong>and</strong><br />

humidity calculation<br />

Figure 10-3: Example of Humidity Controller Connections<br />

Installation <strong>and</strong> Operation H<strong>and</strong>book. Part No HA026502 Issue 1.0 Apr-00 10-9

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