AUBER INSTRUMENTS
WWW.AUBERINS.COM
2018.08
P9/14
Note for mashing mode:
If you set to turn on the relay at step 1 only, relay will
be activated when you start the whole program (when you press key A), and
will be deactivated when step 1 is finished.
It doesn’t affect if the timer
in step
mashing mode has not been started yet. If you set to turn on the relay at other
step, relay will be activated from the moment when the previous step is
finished, to the moment when the current step is finished. If you set to turn on
the relay at continuous steps (for example, step 2 and 3), the relay will remain
at ON position during the transition period(s) between steps.
For example, if you set relay 1 is synchronized with mashing steps (LP1 = M-
SN), and if you set to turn on relay 1 at step 1 & 2 only (rLP1 = 3), once you
press the key A to start the program, relay 1 will be turned ON immediately
(even the step timer has not been started yet). Relay 1 will remain at ON
position during the transition period between step 1 and step 2 (where there
might be a timer gap/acceleration period). When the controller has finished
step 2, relay 1 will be OFF immediately (you will hear the four 2s long beeping
to alert you the current step is finished). In other word, the relay 1 will be turned
on from the moment when you press key A to start the whole program, to the
moment when step 2 has been finished.
Note for boiling mode:
The definition for timer event here (for rLP calculation)
is different than the timer event in boiling mode (section 6.3). The timer event
here is the interval time from the beginning of current timer event to the
beginning of next timer event (like mashing mode).
Current event doesn’t
include the time of next event.
Example: If the first ingredient (bot1) needs 60 minutes, the second ingredient
(bot2) needs 10 minutes and third ingredient (bot3) needs 1 minutes of boil, you
set Bot1 = 1:00, Bot2 = 00:10, Bot3 = 00:01. The event 1 for relay is the time
from 00:00 to 00:50 (if counting up) or 1:00 to 00:10 (if counting down). Event 2
for relay is the time from 00:50 to 00:59 (if counting up) or 00:10 to 00:01 (if
counting down). Event 3 for relay is the time from 00:59 to 01:00 (if counting up)
or 00:01 to 00:00 (if counting down). If you set relay 2 for B-SN, and if you set
rLP2 to 2, relay 2 will be activated during event 2 for relay only, which is the time
from 00:50 to 00:59 (if counting up) or 00:10 to 00:01 (if counting down).
Calculation Example:
a) To turn on relay 1 on step/event 2 and step/event 3 only, rLP1 needs to be
set to 6:
rLP1 = 0*1 + 1*2 + 1*4 + 0*8 + 0*16 + 0*32 + 0*64 + 0*128 + 0*256 = 6
b) To turn on relay 2 from step/event 1 to step/event 5, rLP2 needs to be set to
31:
rLP2 = 1*1 + 1*2 + 1*4 + 1*8 + 1*16 + 0*32 + 0*64 + 0*128 + 0*256 = 31
Note 14: Settings for Process Alarm (rL = ALM or ALbE)
The following parameters are only applicable if this relay is set to process
alarm (rL = ALM or ALbE): LAt, SiL, AH, AL, HY and AP2
Note 14.1: LAt
(Relay Action,
rL = ALM/ALbE only
)
,
determines the relay
actions when alarm conditions are met and/or then removed. It can be set to
PUL
for pulsing mode, or
N
for Normal Mode.
When
LAt
is set to
PUL
(Pulsing Mode,
rL = ALM/ALbE only
), the replay action
is a timed single pulse. When the alarm condition is met, relay will be activated
only for a pre-determined period of time. User can set the pulse duration by the
AP
parameter in the menu of alarm settings; it ranges from 1 to 100 seconds.
This feature is useful in situations where a user only need to ring the buzzer for
a short time or want to drive an external load for a fixed amount of time duration.
When
LAt
it is set to
N
(Non-Latching,
rL = ALM/ALbE only
), the relay action
will follow the alarm condition. The relay stops its action when the alarm condition
is removed.
Note 14.2: SiL (
Relay Silence, also called Alarm Suppression,
rL = ALM/ALbE
only)
,
SiL determines whether a relay action should be suppressed when controller is
just powered up. Relay Silence/Alarm Suppression is only supposed to work
when: 1) absolute low alarm is enabled and 2) the reading temperature is never
over (AL + Hy) after power up. If the reading temperature has been over (AL +
Hy), once the reading temperature drops below AL, the alarm will be ON and
alarm suppression will be disabled.
This feature is useful for the following situation: when a relay is set as low limit
alarm, and you don’t want the relay to pull in when you just power up the
controller as the start-up temperature will be in the alarm zone.
Note 14.3: AH (
High Alarm,
rL = ALM/ALbE only),
determines at what
temperature that is higher than the set temperature the alarm relay will be
activated. This setting applies to both process and derivation alarms. The unit is
in degree C or F.
AH1
is for Relay 1 and
AH2
for Relay 2. It can be set to any
temperature that the controller is capable to reading, or set to “
off
”.
The value of
AH
represents the absolute high alarm. The relay will be activated when PV >
AH, and deactivated when PV < (AH - HY).
Note 14.4: AL (
Low Alarm,
rL = ALM/ALbE only),
determines at what
temperature that is lower than the set temperature the alarm relay will be
activated. This setting applies to both process and derivation alarms. The unit is
in degree C or F. It can be set to any temperature that the controller is capable
of reading, or set to “
off
”.
The value of AL represents the absolute low alarm.
The relay will be activated when PV < AL, and deactivated when PV > (AL + HY).
Tip 1:
AL
should always be less than
AH
(AL1 < AH1, AL2 < AH2), otherwise,
the alarm relay will stay activated all the time.
Tip 2: A relay can be set to work for process high alarm only (i.e., set
AL
=
off
),
for process low alarm only (i.e., set
AH
=
off
), or for both high and low alarm.
Note 14.5: HY (
Hysteresis Band,
rL = ALM/ALbE only),
determines the
hysteresis band between temperature of activating and deactivating alarms. It is
also called differential band by some manufacturer. The unit is degree F or C.
For example, Relay 1 is set as a non-latching process alarm with relays settings
RL1
=
ALM
,
Lgc1
=
RL_C
,
LAt1
=
N
,
AH1
= 200,
AL1
= 100 and
HY
= 3
(temperature unit is F). For the high limit alarm, when the process temperature
is greater and equal to 200˚F, the relay will pull in; an
d when process
temperature drops off below
197˚F, relay will drop off. For the low limit alarm,
relay will pull in when process temperature is less than 100˚F; and the relay will
drop off when process temperature is greater to 103˚F.
Relay on
Relay on
PV
PV
Absolute high alarm
Absolute low alarm
SV
AH - Hy
AH
AL
AL + Hy
SV
Figure 12. Relationship between Hy and high/low absolute alarm
Note 14.6: AP (
Alarm Pulse,
rL = ALM/ALbE only),
determines the time
duration of which a relay stays activated. The unit is second. Pulse length can
be set from 1 to 100 seconds.
