Hanna Instruments HI520 - Starting-Up the Controller

31 Installation & Controller Start-Up
Digital Input
The controller has two digital inputs (IN1 and IN2) that may be used to activate a signaled HOLD and /or
a cleaning function.
1. Run the Input cable through the right front conduit opening.
2. Connect the cable leads to the removable terminal connector marked IN1 or IN2, using the marked lead
locations. Pay attention to polarity. See Figure 19 for power requirements.
3.
After leads are fixed in the terminal connector, carefully put the wired terminal connector into place on
the board.
4. Feed excess cable through the cable gland before tightening the nut.
Analog Output
The controller has up to four analog outputs. For setup information see 10.2 Analog Outputs section.
1.
Run the Analog Output cable through the right front conduit opening along with Digital input IN1 and
IN2 cables.
2.
Connect the cable leads to the removable terminal connector marked AO1 – AO4, using the marked lead
locations. Pay attention to polarity.
3.
After leads are fixed in the terminal connector, carefully put the wired terminal connector into place on
the board.
4. Feed excess cable through the cable gland before tightening nut.
4.3. STARTING‑UP THE CONTROLLER
At start‑up, with probe(s) wired correctly, while the controller performs internal checks, the display will show
the Hanna Instruments logo, controller name, and firmware version.
V1.00
Date: 2023-02-07
HI520 Process Controller
With new or no probe connected one of following warnings is displayed:
Message Description
“No probe connected” Connection issue or no probe connected.
“Different probe. Please set control parameters.” Different probe type (series) connected.
“New probe. Update control settings if necessary.” New probe (same series) connected.
A “Startup delay” message, associated with a programmable countdown timer indication, is displayed at power on.
Ф
ББ
У
5min
6.43
401
25.0
25.0
pH
mV
°C
°C
Startup delay
Note: During Startup delay, control is not started.