Innotech Genesis II Digital Controller (v5) - Manual (Page 40)

Genesis II Installation Instructions
Page 40 © Mass Electronics Pty Ltd 2010 Edition 2.0 dated 06/12/2013
3-3.1.5 Analogue Outputs
Sixteen Analogue Output channels are provided. Each channel can be configured, through the
Gen2Config software, to operate in either the Variable Mode or the Heat Valve Mode.
In the Variable Mode, the output is a voltage-analogue signal varying from 0 to +10 Volts with a
maximum current rating of 5mA. In the Heat Valve Mode, the output signal consists of Pulse-Width
Modulated (PWM), 0-10V, high-speed pulses at 5mA.
For a description of PWM as it applies to Heat Valve Operation, refer to the Innotech Genesis II Direct
Digital Controller User Manual.
When using PWM outputs, up to three solid state relays, connected in series, may be used on each
Heat Valve-configured analogue output channel. See Figure 3-3.
A maximum of eight Analogue Output channels can be applied to Heat Valve operation. For more
than eight Heat Valve outputs, it is recommended that Models IHV4002 or IHV4004 for Heat Valves for
Solid State Relays or IHV4212, IHV4224 or IHV4214 Staging Heat Valves for Solid State Relays be used.
These heat valves are driven by the Digital Controller’s Analogue Output channel in the Variable
Mode.
For more information on these devices, refer to:
• Datasheet DS3.31 for Type IHV Heat Valves.
• Datasheet DS3.32 for Type IHV42 Heat Valves.
1 2
3+ve 4
1 2
3+ve 4
1 2
3+ve 4 +
-
ANALOGUE
OUTPUT
TERMINALS
TO
HEATERS
TO
HEATERS
TO
HEATERS
L1 L2 L3
Figure 3-3: Genesis II DDC Driving Multiple Solid State Relays