Hanna Instruments HI 720 Instruction Manual page 14

Setup Item Description
ERROR CONFIGURATION
E.91 EEPROM corruption
(91)
E.92 Watchdog error
(92)
E.99 Level or pulse signal
(note 11)
TEST
t.00 Display test
t.01 Keyboard test
t.02 EEPROM test
t.03 Relays and LEDs test
t.04 Analog output 1 test
t.05 Analog output 2 test
t.06 Hold digital input test
t.07 Advanced cleaning digital input test
(WARNING: cleaning actions can
be triggered by this input going high
during the test. See note 19 for details)
Setup codes are never displayed by the controller, but they are used to
identify each setup item in this instruction manual, and for the RS485
communication protocol (see "Communication" section).
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Valid Values Default
Alarm relay -------------> On
22 mA fault current----> On
3.6 mA fault current---> Off
SMS sending -----------> Off
Alarm relay -------------> Off
22 mA fault current----> On
3.6 mA fault current---> Off
SMS sending -----------> Off
Level or Pulse Level
NOTES:
( 1 ) M1 can not be set to "On/Off high" or "On/Off low" if O.10 is set to
"Control-setpoint 1" and vice versa.
0 ≤ LA + AH < HA - AH ≤ f.s.
if M1 = "PID high", then S1 + D1 ≤ HA - AH
if M1 = "PID low", then S1 - D1 ≥ LA + AH
if M1 = "On/Off high", then S1 - H1 ≥ LA + AH
if M1 = "On/Off low", then S1 + H1 ≤ HA - AH
M2 can not be set to "On/Off high" or "On/Off low" if O.20 is set to
"Control-setpoint 2" and vice versa.
if M2 = "PID high", then S2 + D2 ≤ HA - AH
if M2 = "PID low", then S2 - D2 ≥ LA + AH
if M2 = "On/Off high", then S2 - H2 ≥ LA + AH
if M2 = "On/Off low", then S2 + H2 ≤ HA - AH
if M1 = "On/Off high" and M2 = "On/Off low", then S1 - H1 ≥ S2 + H2
if M1 = "On/Off low" and M2 = "On/Off high", then S2 - H2 ≥ S1 + H1
if M1 = "PID high" and M2 = "On/Off low", then S1 ≥ S2 + H2
if M1 = "On/Off low" and M2 = "PID high", then S1 + H1 ≤ S2
if M1 = "PID low" and M2 = "On/Off high", then S1 ≤ S2 - H2
if M1 = "On/Off high" and M2 = "PID low", then S1 - H1 ≥ S2
if M1 = "PID high" and M2 = "PID low", then S1 ≥ S2
if M1 = "PID low" and M2 = "PID high", then S2 ≥ S1
In addition to the above constraints, in any case, unless M1 = "Off", it must be
LA + AH ≤ S1 ≤ HA - AH , and, unless M2 = "Off", it must be LA + AH ≤ S2
≤ HA - AH. Deviation must be 0.
"f.s." (full scale) is the maximum displayed value for the currently configured type
of measurement, range and unit.
( 2 ) The calibration password allows calibration and hold mode through the
keyboard for service personnel only, while the general password allows any op-
eration (including calibration). Obviously, the general and the calibration/hold
passwords can not be viewed among other items when the SETUP key is pressed
without entering the right general password. The default general password is
"0000". If the user forgets the general password, this can be reset to the default
value by pressing CFM+DIAG+CAL DATA simultaneously, while in normal op-
erating mode (idle or control mode). Confirmation is required for the reset; press
the up arrow key to confirm the choice.
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