S4000C
10
FROM
TO
Model
S4000C
Model
DC110
Model
DC120
Model
DC130
Model
TA102A
TB2-1
4-20mA
Output
Rear
CH 1 – 8
4-20mA
Rear
TB1
Pin 8 or 9
Rear
Pin 2 or 5
Analog In
Rear
Pin 26d or
26z
Table 4: Analog Signal Connections
If a device other than a General Monitors’ readout/relay display module is being used, the DC
ground, COM, of both systems must be connected together.
3.5.5 Terminal
Block
TB3 – Relay Connections
TB3 contains the connections for the Relay Contacts (optional). The function for the Warn and
Alarm Relay connections vary according to the normal state of the relay. Use the following as a
guide for determining the Normally Open (
NO
) and the Normally Closed (
NC
) contact:
TB3
position
Relay Contact
(De-Energized)
Relay Contact
(Energized)
1
Normally Closed
Normally Open
2
Common
Common
3
Normally Open
Normally Closed
Table 5: Alarm Relay Connections
TB3
position
Relay Contact
(De-Energized)
Relay Contact
(Energized)
4
Normally Closed
Normally Open
5
Common
Common
6
Normally Open
Normally Closed
Table 6: Warn Relay Connections
TB3 position
Relay Contact (Energized)
7 Normally
Open
8
Common
9 Normally
Closed
Table 7: Fault Relay Connections
*NOTE:
Fault relay is normally energized. Relay will change state after power up.
WARNING:
Contact with PCB components should be avoided to prevent damage by static
electricity. All wire connections are made to the Terminal Blocks.
WARNING:
Relay contacts must be protected against transient and over voltage conditions
(Figure 9).
