M A Current Loop Module - GSE 60 SERIES Technical Reference Manual

20 A C
M URRENT
This section describes the installation of the 20mA Current Loop module.
Installing this module will convert comm port 1 from RS-232 to 20mA
current loop (not to be confused with 0-20mA or 4-20mA analog output).
To install the 20 mA Current Loop Module (all models):
1. Open the indicator and gain access to the main board.
2. Remove the U17 IC ( on the 660 Series main board) or U3 IC (on the
460 Series main board) from its socket.
3. Remove the white wire jumper from the IC socket where the chip in
step 2 was removed.
4. Snap the plastic spacers into the three mounting holes.
5. Gently press the option board into the socket.
6. Apply the included sticker to comm port 1. The label will go over the
silk screen on the board. Use the portion of the label titled "60 Series."
Align TA over GND on comm port 1 and adhere the label over the
silkscreen.
7. Reassemble the indicator.
Figure 13-20: 460 Series 20 mA Current Loop Installation
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OOP ODULE
60 Series Technical Reference Manual
Options 13-37