GE DigitalFlow GS868 Startup Manual page 30

RS232 SERIAL PORT
Pin # Description
1 RTN - Digital Return
2 TX - Transmit
3 RX - Receive
4 DTR - Data Terminal Ready
5 CTS - Clear to Send
For compliance with the European Union's Low Voltage
NOTE:
Directive, this unit requires an external power
disconnect device such as a switch or circuit breaker. The
disconnect device must be marked as such, clearly visible,
directly accessible and located within 1.8 m (6 ft) of the
Model GS868.
TB1 POWER INPUT TB1 POWER INPUT
OR
12 - 28 VDC 100 or 120 VAC
Pin # Description Pin # Description
1 G - Earth Ground 1 G - Earth Ground
2 – Negative 2 N - Line Neutral
3 + Positive 3 L1 - Line Power
NOTE: For compliance with the European Union's Low Voltage
Directive, a transparent plastic shroud protects
the electrical connections. The shroud must remain in place,
except while wiring the unit. Reinstall the shroud after the
wiring has been completed.
NOTE
One option card of each
available type is shown in this
diagram. These cards are not
always installed in the same
slots used for this example.
DigitalFlow™ GS868 Startup Guide
RS485 PORT (MODBUS)
Pin # Description
1 TMT-
2 TMT+
3 Unused
4 Unused
5 Unused
TB1 POWER INPUT
OR
220 or 240 VAC
Pin # Description
PC Board
1 G - Earth Ground
Ground Wire
2 L2 - Line Power
3 L1 - Line Power
Cover
Ground Wire
Internal Ground
Connection
Plastic LVD Shroud
ALARM RELAYS
Pin # Description 0/4-20 mA ANALOG OUTPUTS
1 Relay A - Normally Open (NO) Pin # Description
2 Relay A - Common (C) 1 Output A - RTN(-)
3 Relay A - Normally Closed (NC) Output A - SIG(+)
2
4 Relay B - Normally Open (NO) 3 Output B - RTN(-)
5 Relay B - Common (C) 4 Output B - SIG(+)
6 Relay B - Normally Closed (NC) 5 Output C - RTN(-)
7 Relay C - Normally Open (NO) 6 Output C - SIG(+)
8 Relay C - Common (C) 7 Output D - RTN(-)
9 Relay C - Normally Closed (NC) 8 Output D - SIG(+)
WARNING
GATE
DRTN
TWIND
RWIND
ALARMS ANALOG OUT ANALOG IN TOTL/FREQ RTD IN
RS485 RCV
2
1
CHAN 2
DN UP
X
ANALOG OUT S R R S
I T T I
B A D
G N N G
- + - +
C
RS 232 CHAN 1
R
DN UP
S
C D R T R
S R R S
T T X X T I T T I
S R N G N N G
G – +
G N/L2 L1
0/4-20 mA ANALOG INPUTS TOTALIZER/FREQUENCY OUTPUTS
Pin # Description Pin # Description
1 Input A - +24V 1 Output A - Common (C)
Input A - INHI Output A - Normally Open (NO)
2 2
3 Input A - INLO 3 Output B - Common (C)
4 Input A - RTN 4 Output B - Normally Open (NO)
5 Input B - +24V 5 Output C - Common (C)
6 Input B - INHI 6 Output C - Normally Open (NO)
7 Input B - INLO 7 Output D - Common (C)
8 Input B - RTN 8 Output D - Normally Open (NO)
Chapter 1. Installation
CH2 TRANSDUCER
Pin # Description
Upstream SIG(+)
1
2 Upstream RTN(-)
3 Downstream RTN(-)
4 Downstream SIG(+)
0/4-20 mA ANALOG OUTPUTS
Pin # Description
1 Output A - SIG(+)
2 Output A - RTN(-)
3 Output B - SIG(+)
4 Output B - RTN(-)
Test Points
CH1 TRANSDUCER
Pin # Description
1 Upstream SIG(+)
2 Upstream RTN(-)
3 Downstream RTN(-)
4 Downstream SIG(+)
RTD INPUTS
Pin # Description
1 Input A - SIG(+)
Input A - Common (C)
2
3 Input A - Common (C)
4 Unused
5 Input B - SIG(+)
6 Input B - Common (C)
7 Input B - Common (C)
8 Unused
20