Cansec H1000 Посібник з монтажу - Сторінка 14

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Connection to the Elevator Controls

For safety and system serviceability the access control system should be isolated from the

power connections of the elevator buttons. An Elevator Interface Relay Box must be used

for this purpose, to prevent high voltage and high voltage spikes from interfering with the

access control system. This Elevator Relay Interface Box must be supplied by the elevator

company to avoid potential liability issues. The Elevator Interface Relay Box must provide

isolating relays which physically isolate the voltage present on the elevator buttons from the

H1000 outputs.

It is important to understand that the H1000 panel's output relays ("Form C") will be

controlling the coils of the relays in the interface box and that a single shielded single pair

must be used for each relay connection. Multi-pair cable must not be used as inductive

voltage spikes will be passed onto the adjacent wires. These voltage spikes can cause the

access control panel to be intermittent. To eliminate relay coil voltage spikes it is important

to place a power diode (1N4007) right at the coil connection.

If the elevator relay interface box contains 110/220 VAC, it should be labeled outside with

"DANGER High Voltage Contained Inside". This is important for the safety of personnel

doing maintenance.

In the event that a building fire alarm occurs it is imperative that all floor selector buttons

in the cab are operational. When a fire alarm occurs, the fire alarm panel typically operates

a dry relay contact. In normal operation (No Fire Alarm) this "Form C" relay contact is

"Closed". In the event of a fire alarm this "Form C" relay contact goes "Open". This relay

is used to automatically bypass the access control system in the event of a fire alarm so that

all floor selection buttons are operational.

It is advisable to have an Elevator Access Controller Bypass Switch present. This allows the

elevator company an easy means to work on the elevator without requiring the presence of

the company in charge of maintaining the access control equipment. Similarly, if there is a

failure with the elevator access control system, the bypass switch will allow elevator

operation until the access control system is repaired.

H1000 Elevator Control

Page 14 of 20

Installation Guide

October 2015 • Rev. 1.7