Emerson Process Management ControlWave EFM 3808 - Manual (Page 134)

4-2 / Specifications CI-ControlWave EFM
Table 4-2 - RS-232 Ports (COM1/2/4/8 and RS-485 Ports COM3//5/9
Connector Pin Assignments
Pin
#
Signal
RS-232
Description:
RS-232 Signals
Signal
RS-485
Description:
RS-485 Signals
1 DCD Data Carrier Detect Input N/A
2 RXD Receive Data Input RXD- Receive Data - Input
3 TXD Transmit Data Output TXD- Transmit Data - Output
4 DTR Data Terminal Ready Output TXD+ Transmit Data + Output
5 GND Signal/Power Ground ISOGND Isolated Ground
6 DSR Data Set Ready Input RXD+ Receive Data + Input
7 RTS Request To Send Output N/A
8 CTS Clear To Send Input N/A
9 N/A N/A
Figure 4-1 - DB9 9-Pin Connector
Associated with COM1, COM2, COM3, COM4, COM5, COM8 & COM9
4.3 SYSTEM CONTROLLER MODULE
4.3.1 Input Power Specs.
Note: Voltages are dc unless otherwise specified.
Operating Range:
+4.5/4.9V to +16.0V (+6V Input Supply) (Shutdown occurs
at +4.72/4.33V nominal)
+9.6/10.3V to +16.0V (+12V Input Supply) (Shutdown
occurs at +10.29/9.56V nominal)
Output Voltages:
+3.3Vdc ±1%
Output Current:
1A Max. @ 3.3Vdc
Output Ripple P/P: +3.3V Output: 10mV
Input Current: With Supply Loading of 3.3V @ 1.0A
Vin @ +6V - Iin Max. TBDA
Vin @ +12V - Iin Max. TBDA
Fusing: 1A Slow Blow 5x20mm Fuse
Electrical Isolation:
None
Surge Suppression:
16V Transorb to DGND and Chassis
Meets ANSI/IEEE C37.90-1978
Terminations:
Pluggable, maximum wire size is 16 gauge