Asentria SiteBoss 530, Руководство пользователя

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Asentria SiteBoss 530 User Manual
111
Relays as Alarm Action
Relays can be used to open or close part of a circuit of your design or part of another product. You can use the
relays on an optional Expansion Card installed in the S530 to control these devices. Relays can be toggled
based on sensor readings, data events, or even remotely by SNMP.
Caution:
Do not exceed maximum ratings for relays. S530 relays are only designed to switch
relatively low voltages and amps, and are not intended to switch AC powered devices. Only a certified
electrician should work with and connect AC Voltage to the S530. Improper use outside the guidelines of
this manual could cause injury or death.
Max switched voltage: 60V
Max switched current: 1A
Max switched power: 30W
Remember Ohm's law: W = V x A (watts = volts x amps)
30W = 1A x 30V
30W = .5A x 60V
Note:
Be aware of the inrush (startup) current of the device you are connecting to the relays. A device
drawing 1A while powered up can draw many times that upon power up. This is especially true with capacitive or
inductive circuits.
Action Definition
Relays actions are defined in the Action List and below. Relay definitions are somewhat more complicated than
other sensors in that they must declare the action to perform, which sensor the relay is on, and which relay on
that sensor to switch.
Relay actions are declared with the following syntax:
•
relay(action, EventSensor, point)
Put a relay in a certain state specified by
action
.
°
action
: one of the following two words, by case-insensitive exact match or partial unambiguous
match:
active
or
inactive
. “Active” always means to energize the relay.
°
EventSensor
: the number of the EventSensor that has the specified relay, where it is the same as
that referred to by the index in an EventSensor key (e.g., 200 in
event.sensor[200].*
for the
internal EventSensor) as well as that referred to by the SNMP esIndex object.
°
point
: the number of the relay (1-based) on the specified EventSensor. E.g., this is the same
number x in "
event.sensor[200].relay[x].*
"