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MAXIM Installation Instructions

3-3.2.2 Universal Inputs / Outputs

The MiniMAX controllers are equipped with seven Universal Inputs/Outputs which can be configured

with MAXCon soware to be used as inputs or outputs. Each Universal Input/Output has a signal

terminal (+) and a reference terminal (–). The types of inputs and outputs that can be configured and

the respective range for each are shown in Table 3-7 below.

When a UIO on a MiniMAX controller is configured as a Thermistor input type, it is designed to be used

with 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 = 10 k Ω )

A single transformer may be used to supply voltage to more than one controller, but you must ensure

that the planned load is well within the rating of the transformer. The transformer output terminal

designated as AC Neutral must be solidly earthed to the main earth link of the enclosure panel. The

dedicated power input terminals are Terminals 1 and 2 and are detailed in Table 3-6 below.

Table 3-6: MiniMAX Controller Power Input Terminals

Terminal AC Supply

1 24VAC

2 0VAC (Neutral

Table 3-7: MiniMAX Universal Inputs/Outputs

UIO Type Input Range Output Range

Analogue Input 0 – 10 V DC 0 – 10 V DC

Dry Digital Input Open or Closed OFF or ON

Voltage Digital Input 0 – 10 V DC OFF or ON

Thermistor Input 96 k Ω – 677 Ω -20 ° C to 100 ° C

LUX Sensor Input

20 k Ω – 400 Ω

3 to 1000 LUX

0 to 2500 LUX

Dry Pulse Counter Input

0 – 10V Square Wave

1 to 13Hz

0 to 25 pulses per second

±1 pulse accuracy

Voltage Pulse Counter Input

0 – 10V Square Wave

20ms Min. ON Time

20ms Min. OFF Time

0 to 25 pulses per second

±1 pulse accuracy

Analogue Output 0 to 100% 0 – 10 V DC

Digital Output OFF or ON 0 or 10 V DC

PWM Output 0 to 100% 0 to 100% Duty Cycle at 13Hz

It is not recommended to use the Pulse Counter on these controllers for accumulation as these controllers are not

equipped with battery backup or flash RAM. The MAXIM II, MAXIM III, and MAXIM 1010 controllers are better suited

for such situations.

NOTE

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