Hach PHOSPHAX sigma Manuel D'utilisation De Base page 125

Figure 7 View of the terminal board
Terminals for
shielding
Terminal board
Relay I = relay-min (lower limit-value contact)
Relay II = relay-max (upper limit-value contact)
(Figure shows relays in idle state.)
Current I = current output 1 (submenu (+SPECIAL P) or (+CURRENT 1))
Current II = current output 2 (submenu (+SPECIAL OP) or (+CURRENT 2))
In order to connect the transmission lines for current
output, limit-value contacts and bus interface, the following
work steps are required:
1. Disconnect device from the mains supply.
2. Open device door.
3. Loosen the knurled screw at the top right and swivel the front panel
out forwards. The connections are located on the right on the
terminal board.
4. Loosen the PG screw connection for the corresponding connection
cable and remove the blanking disc.
5. Plug the cable through the screw connection into the device and
route forwards to the connection terminals.
6. Plug cable ends into the corresponding connection terminals (wire
thickness maximum 1.5 mm
terminals is seen from Figure
3 4 5 6 7 8 9 10 11 12 13 14
1 2
A
1
32 23 32 23
Relay 1 Relay 2 Current 1 Current2
Interface:
bus-capable
2 ). The assignment of the connection
7the view of the terminal board.
7. Check that the connection cable runs loosely through the device
and then tighten the cable screw connection firmly again.
8. The limit-value contacts must be used variably as normally closed
contacts or normally open contacts (each with three connection
terminals with switch symbol).
9. All externally connected lines must be shielded, all shields are
screwed to the terminal block near to the hinge!
Startup
After the installation of the device, the reagents are placed in the
refrigerator.
Refer to section Exchange of the
B A B
1 2 2
Upon full hose connection including drain hose, the power plug can be
RS 485
plugged in both for the refrigerator and for the measurement device.
This begins the measurement operation immediately. All device settings
are described in the software menu system.
Passcode Protection
To protect the device from unauthorized access or unwanted operation,
a password function can be activated directly at commissioning or later
at any time via a laptop by the HACH-LANGE employee. The passcode
is four digits and each of these consists of the numbers 1–4, which can
be freely programmed.
Shutdown
For a long-term shutdown (over 2 days), the valve hoses must be removed from
the pinch valves to provide relief. But because of the return flow risk, the hoses
must first be removed from the respective screw caps (canister lids)! Please
observe during the handling of the reagents the safety notes under
Exchange of the reagents.
Note: Please observe during the handling of the reagents the safety
notes under section Exchange of the
So that no crystallization or other major impurities impede a subsequent
commissioning, the entire system must be purged for a shutdown of
reagents.
N O T I C E
reagents.
section
English 125