9.2
SETTING THE RELAY OUTPUTS S1, S2 AND S3 AS THRESHOLDS
9.2.1 COMMENTS ABOUT REGULATION WITH BAMOPHAR
Before to set up or to choose the regulation mode, it is necessary to define the operating mode.
BAMOPHAR 107 allows you to choose between 3 operating modes:
1) ON/ OFF regulation mode with thresholds values S1, S2 and/ or S3
2) Relay regulation mode with proportional bandwidth and dead zones (relays S1 and S2)
3) P.I.D. regulation mode using the 4-20 mA output signal of BAMOPHAR
Specificity of threshold S3:
May be assigned to the external signal (E1): to block the regulation (terminals 5 and 6, see wiring diagram).
In this case, relay S3 becomes a normally closed contact (N.C) and E1 is not active; S3 opens when blocking regulation operates (E1 active).
This means:
- Relay S3 is normally closed (N.C.) if no voltage applies between terminal 5 and 6 (E1 not active).
- Relay S3 will open when voltage applies between terminals 5 and 6 (E1 active)
Consequences of blocking the regulation:
• When working in ON/ OFF regulation mode, there is no additional action on relays S1 and/ or S2.
• However, it is possible for the user to connect the relays S1 and S3 in series to secure the injection (if relay S1 manages the injection of
reagent). When working in relay regulation mode, relays s1 and s2 are opened (non actuated); regulation is inhibited.
• When working in PID regulation mode, the 4-20 mA signal is frozen.
9.2.2 ADJUSTMENT OF THRESHOLDS S1, S2 AND S3 IN MODE ON/OFF REGULATION
Below is a detailed description of the steps to set the threshold S1:
Enter to the menu ADJUST ALARM 1
ALARM 1 ON / OFF
To set up output S1, select ON, then confirm.
To disable the relay S1 select OFF mode, then confirm and save the setting.
ALARM 1 MEASURE / TEMP.
In ON mode, threshold S1 can be set in MEASUREMENT or TEMPERATURE mode:
MEASURE mode = threshold dedicated to pH or mV (ORP) measurements
TEMP. mode = threshold dedicated to temperature measurement
Select the appropriate mode, then confirm.
ALARM 1 HIGH / LOW
HIGH = Trigger when measurement rises over threshold S1
LOW = Trigger when measurement decreases below threshold S1
Select the appropriate actuating mode, then confirm.
ON 08.00 pH / °C
Enter the value at which relay S1 will actuate (closing), then confirm.
OFF 07.50 pH / °C
Enter the value at which relay S1 will be opened, then confirm.
DELAY UP ON / OFF
With or without delay to actuate the relay S1.
TIME 0000 Sec
Enter the duration of delay before actuating S1, then confirm.
DELAY DOWN ON / OFF
With or without delay to open relay S1
TIME 0000 Sec
Enter the duration of delay before opening S1, then confirm.
SAVE ?
To record the settings, press the icon SAVE.
All settings for S2 and S3 are available respectively in ADJUST ALARM 2 and ADJUST ALARM 3 menus, identical to S1.
9.2.3 ASSIGNMENT OF S3 THRESHOLD TO EXTERNAL SIGNAL (E1)
Go to the menu ADJUST ALARM 3.
ADJUST ALARM 3 ON / OFF
Select the ON mode to set up the output S3, then confirm.
EXTERN. YES / NO
If NO : the sequence of settings are same as for S1 or S2 in ON/ OFF regulation mode
If YES = external signal (E1) is assigned to relay S3
Relay S3 becomes a normally closed contact (E1 not active) and will open when blocking of
regulation operates (E1 active).
Confirm the selection.
SAVE ?
To record the settings, press the icon SAVE.
MES
23-11-2018
M-107.01-EN-AE
107-01
/11
pH/ mV monitors
BAMOPHAR 107
22, Rue de la Voie des Bans · Z.I. de la gare · 95100 ARGENTEUIL
Tel
Fax
+33 (0)1 30 25 83 20
+33 (0)1 34 10 16 05
Web
www.bamo.eu
INTERNATIONAL
