Further Details; Connecting Photocells And Accessories In Standby Mode; Connecting Photocells In "Phototest" Mode - Nice DPRO924 Instructions And Warnings For Installation And Use

Table of Contents

FURTHER DETAILS

6.1 - Connecting photocells and accessories in standby mode

The "Total stand by" function is used to reduce consumption and is useful when there is a buffer battery because it allows prolonging the battery charge, it can

be activated using the Oview programmer.

Once the "Stand by Time" from the end of a manoeuvre has elapsed (default: 1 minute), the control unit goes into "Total stand by" mode, and switches all inputs

and outputs off to reduce consumption. The state is highlighted by the OK led starting to flash more slowly.

To reduce consumption, it is necessary to connect the photocells and any external devices as shown on the side.

The supply of both transmitters and receivers must be connected to the COM SBY output: in this mode, no Phototest is performed.

WARNING - With the "Stand by" mode active, the control unit can be reactivated by sending a command to the OXI radio receiver or SbS input using the

opening and closing buttons on the box lid.

CAUTION! - If the Photo or Photo2 photocells are not used, jumper the input with the COM SBY output.

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6.2 - Connecting photocells in "Phototest" mode

The "Phototest" function increases the reliability of the safety devices, allowing reaching "category II" in compliance with the EN 13849-1 standard (set of the

control unit and safety photocells).

When a manoeuvre starts, the safety devices involved in the manoeuvre are checked and the manoeuvre starts only if everything is OK. If the test result is

negative (e.g. photocell blinded by the sun, cables shortcircuited, etc.), the fault is identified and the manoeuvre is not performed.

After the connection in "Phototest" mode, it is necessary to carry out the "Learning about the safety devices and dip switch programming" procedure (para-

graph 4.3).

To add a pair of photocells, connect them as follows:

The supply of the receivers is taken directly from the service outputs (terminals GND (1) - 24V, (2)), while the transmitters are supplied from the "Phototest"

output (terminals GND (1) - Phototest (3)). The maximum usable power on the "Phototest" output is 200mA.

CAUTION!

- If two pairs of photocells are used and they interfere with each other, activate the "synchronisation" function as described in the photocell

user manual.

- If photocells Photo or Photo2 are not used, it is necessary to jumper the input with the Phototest output.

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