Flow - outputs menu - relay b 7.16 – Aquametrix SHARK-120/240 Controllers User Manual User Manual

Page 126

MULTI-PARAMETER CONTROLLER & ANALYZER USER’S MANUAL

Flow - Outputs Menu - Relay B 7.16

Flow - Outputs Menu - Relay B 7.16

Page 124

DOWN

The CYCLE OFF time is the amount of time in
seconds that the relay will be off for, it can be
set between 0 - 600 seconds.
To disable the cycling feature set the cycle off
time to 0.
The default OFF time is 0 seconds.

The FAIL SAFE feature is designed to reverse the
normal action of the relay.
When set to FAIL SAFE OFF, the relay will operate
as a normal relay, which means that when the relay
is not energized the NO contacts are open, and a
device connected via the NO contacts is turned off.
When the relay becomes energized the device turns
on.
When the relay is set to FAIL SAFE ON, the normal
action of the relay is reversed. Thus the NO contact
acts as the NC contacts and the NC acts as the NO.
Therefore the device connected to the NC contacts
will be turned on when the relay on set-point is
reached. Actually the relay will be de-energized but
because it is acting in reverse the device will be
turned on. When the relay off set-point is reached
the relay will energize and the device connected to
the NC contact will turn off.
The reason that the Fail Safe option would be used
is to have the device turned on in the event of a
power interruption. For example, a process that
needs a constant feed, would want a pump to turn
on in the event of a controller power failure.

With "N" selected, pressing the
key will NOT store the selection, but
simply return to the OUTPUTS Menu.
This function is useful if you wish to
view the current selection without
making any changes.

DOWN

The relay can be set to CYCLE when the
process is between the RELAY ON setting and
the RELAY OFF setting. This is meant to help
eliminate overshoot.

The CYCLE ON time is the amount of time in
seconds that the relay will be on. The value can
be set between 0 and 600 seconds.
The default ON time is 5 seconds.

NOTE

PRESS THE AND KEYS

TOGETHER TO GO IMMEDIATELY BACK TO

RUN MODE

DOWN

Use the and
keys to change the setting

Then press the key to store the
selection and return to the OUTPUTS menu

DOWN

Press the key to accept the
setting and move to the STORE
fucntion

Press the key to accept the
setting and move to the next setting

the Y character.

Or press the key to highlight

TO OUTPUTS MENU

Not stored

Stored

DOWN

Press the key once
which will move the cursor
back to the RH side of the
display.

DOWN

If you wish to change the setting, press the
key once which will move the cursor to the first
character of the value to be changed

FROM CYCLE ON

DOWN

Use the and
keys to change the setting

Press the key once
which will move the cursor
back to the RH side of the
display.

If you wish to change the setting, press the
key once which will move the cursor to the first
character of the value to be changed

DOWN

Use the and
keys to change the setting

Press the key once
which will move the cursor
back to the RH side of the
display.

If you wish to change the setting,
press the key once which
will move the cursor to the first
character of the value to be

DOWN

FAIL SAFE ON >

STORE? Y N

RELAY A

FAIL SAFE OFF >

RELAY B

FAIL SAFE O FF >

FAIL SAFE O N >

RELAY B

CYCLE OFF 20 0 S >

CYCLE OFF 200 S >

RELAY B

CYCLE OFF 0 S >

RELAY B

CYCLE ON 5 S >

RELAY B

CYCLE ON 100 S >

CYCLE OFF 0 S >

RELAY B

CYCLE ON 5 S >

CYCLE ON 10 0 S >

RELAY B