Extron electronics IPL Pro CR88, Руководство пользователя

Страница: 27 / 43

IPL Pro Series • Hardware Features and Installation 19
F
Relay ports — Relay ports provide control for power, screen or projector lifts, window
coverings, and similar items, when trigger events occur.
1 2 3 4
5 6 7 8
RELAYS
3
4
1
2
7
8
5
6
RELAYS
Rear Panel Front Panel
1
5
Normally
Open
Common
To Room Control
Equipment
Relay LEDs
Light when the
corresponding relays
are activated (tied to
GND, closed).
All relays are
normally open.
Relays
• Connect devices for relay control.
• Do not exceed a total of 24 V at 1 A for each port.
Figure 13. Cabling Relay Ports
These relay contacts may be used to control any equipment as long as the contact
specifications of a total of 24 V at 1 A are not exceeded for each port. These relays are
normally open by default.
When activated, the open contacts close. They can be set up to operate in one of two ways:
•
Latching
(brief or indefinite period contact) (press to close, press to open), or
•
Pulsed (timed cycle) (press to close, timeout to open, with automatic repeat).
In pulse mode the default timeout period (hold time) is ½ second (500 ms). Use Global
Configurator to change the length of the timeout period.
NOTE:
The pulse function is absolute: it always sets the relay state to closed, times
out (briefly), then opens the contact. It overrides the previously selected setting
(on state, off state, or toggle).