Innotech Maxim User Manual
Page 37
Page 37
MAXIM Installation Instructions
© Mass Electronics Pty Ltd 2011
Chapter 3 – Electrical Installation
3-3.3.3 TRIAC Outputs
The VAVMax and MicroMAX controllers are equipped with four TRIAC outputs used for switching the
24VAC power supply through to the outputs of the controller. There are four 24V terminals for each
TRIAC output, and two 0V terminals that are shared by the four TRIAC outputs. The TRIAC outputs
are rated at a minimum current of 20mA, and maximum current of 250mA. The TRIAC outputs can
operate in two modes: Pulse Width Modulation (PWM) or Digital (ON/OFF). The output range for both
modes of operation are described in Table 3-12 below.
3-3.3.4 Fixed Thermistor Input
The VAVMax and MicroMAX controllers are equipped with a fixed thermistor input labelled TEMP. The
fixed thermistor input has a signal terminal (+) and a reference terminal (–). This input is designed
for use with the Innotech SEN Series Detectors. The sensing range and accuracy for the SEN Series
Detectors is as follows:
• Nominal sensing range -5°C to 60°C
• Accuracy +/-3.5%FS (R25°C = 10kΩ)
Table 3-12:
VAVMax and MicroMAX Controllers: Modes of Operation for TRIAC Outputs
TRIAC Output Mode
Output Range
Digital
ON or OFF
PWM Output
0-100% (0-10VDC)
The use of pilot relays is recommended when switching high voltage and inductive loads.
NOTE