Hach sc1000 - Manual (Page 35)

33
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.
5. Write the serial number from the rating plate on the supplied sticker and attach it to
the main high voltage barrier ( Figure 18 ).
6. Install the probe module cover.
After installation and connection of a plug-in expansion card, the card must be configured
to the system. For output card setup instructions, refer to
section 6.3.1 on page 78 .
Figure 23 Output card (YAB019) cable connections
1 Terminal Block – Refer to Table 6 for terminal assignments.
Table 6 Output card (YAB019) terminal assignments
Terminal Designation
1 Output 1+
2 Output 1 –
3 Output 2 +
4 Output 2 –
5 Output 3 +
6 Output 3 –
7 Output 4 +
8 Output 4 –
9 Shield (Connected to protective earth)