Hach-Lange SC 1000 - Manual (Page 34)

32
Installation
3.6.3 Output card connections
If the instrument is equipped with the output card option, the mA output card supplies up
to 4 analog (0–20 mA/4–20 mA) signals into an impedance of max. 500 Ohm.
Note: The sc1000 mA output card cannot be used to provide power to a 2-wire (loop-powered)
transmitter.
To make an output card connection:
1. Remove power from the instrument. Remove the probe module cover.
2. Connect the output card to the appropriate slot ( Figure 18 ). Use a magnetic
screwdriver to secure the four screws to the card.
3. Install the card connector to the appropriate connection on the main circuit board
( Figure 17 ).
4. Feed the cable through the base of the module and properly prepare and insert each
wire into the terminal according to Figure 23 and Table 6 . Tug gently after each
insertion to make sure that the connection is secure.
Figure 22 Input card (YAB018) cable connections and jumper setting
1 Jumper switches
Digital input=Jumper closed
Analog input=Jumper opened 2 Terminal block– Refer to Table 5 for terminal
assignments.
Table 5 Input card (YAB018) terminal assignments
Terminal Designation
1 Input 1 +
2 Input 1 –
3 Input 2 +
4 Input 2 –
5 Input 3 +
6 Input 3 –
7 Input 4 +
8 Input 4 –
9 PE (Protective earth)