2101510MNAH | NGC8200 AND PGC1000 USER MANUAL | 21
2.6 Termination board
The termination board provides ports or terminals for power, internal or external communication, and
I/O connections (Figure 2-12). It features transient protection, a voltage regulator for the digital
controller, positive temperature co-efficient fuses (PTC) and many other safeguards to protect the
remainder of the system from electrical damage. This board supports all outside communications and
I/Os. The termination board is low cost and field-replaceable. It operates on either 12 VDC or 24 VDC.
Figure 2-12 shows board components on the primary and secondary sides.
The primary component side (left on Figure 2-12) is accessible at the back of the analyzer after
removal of the rear cap. It provides interfaces for power, I/O, external communication connections,
and local communication options. This side features:
Power connection and indicators:
Power terminal connector (J1)
1 Power monitor status indicator LED (D1)
1 Voltage Regulator (5 VDC) status indicator LED (D2)
I/O connections:
2 DIs and 2 DOs (J2)
Local communication interface (MMI) for operator access (depending on purchased option,
onboard interface connects internally to external explosion-proof port):
USB host interface (J5) or
Optional RS-232 (J7)
Communications:
Ethernet interface (J3) with 3 LED status indicators (D11, D12, D13)
2 serial ports (RS-232/RS-422/RS-485 software selectable) (J8 and J10)
Onboard security:
1 Security Toggle Switch (S2)
1 Security Switch Status indicator LED (D3), software programmable
1 status indicator LED (software programmable, D4)
Reset button (S1)
The secondary component side (right on Figure 2-12) faces the interior of the analyzer and provides
interfaces for internal connections.
Transient protection
EMI/RFI protection
PTC fuses
Voltage regulator for digital controller (VR1)
Connector for the Analytical Processor Board (J12, internal connection)
Connector for the Digital Controller Board (J4, internal connection)
Figure 2-12: Termination board
PRIMARY COMPONENT SIDE
SECONDARY COMPONENT SIDE
J12
OUTPUTS
D4
(-)
2
(-) (+)
J7
POWER
D1
J9
D3
D2
5VDC
J2
J1
J6
1
J8
J5
32
54 76
98
D12 D11
J3
1 3
D13
S1
LINK
LAN
STAT
41 32
56 87
J10
9
J11
1
3
INPUTS
(-) (-)
1
(+)
2
(+)
1
(+)
VR1
S2
UNSECURE
SECURITY
ENABLED
STATUS
(-) (+)
J4
ANALYTICAL PROCESSOR
CONNECTION
DIGITAL CONTROLLER
CONNECTION
USB CLIENT RECEPTICAL
ETHERNET STATUS INDICATORS
RESET
USB HOST RECEPTICAL
SERIAL PORT 1
SERIAL PORT 1
TERMINATION
LOCAL SERIAL DATA
CONNECTION
SECURITY SWITCH
DIGITAL I/O
POWER
ETHERNET
RECEPTICAL
SERIAL PORT 2
TERMINATION
SERIAL PORT 2
VOLTAGE
REGULATOR
SECURITY
SWITCH STATUS
POWER LED
VOLTAGE REGULATOR LED