TS4000H
26
Figure 11: Relay Protection for DC and AC Loads
North American Approved Applications:
The ALARM relay contact ratings are 8 A @ 250
VAC and 8 A @ 30 VDC resistive max.
European Union (EU) Approved Applications:
The ALARM relay contact ratings are 8 A,
30 V RMS/42.4 V peak or 8 A @ 30 VDC resistive max.
3.6 Applying Power and Starting Operation
Once the mounting, cabling, and alarm relay installation is complete, the TS4000H is ready to
begin the power-on sequence. Please read this section carefully before applying power to the
TS4000H.
3.6.1 Start-up
Readiness
Checklist
Before applying power to the system for the first time, check the following items:
Step
Description
1
Verify that the TS4000H is properly mounted. Make sure that the conduit / cable
gland entries are pointed downward
2
Verify that all the signal wiring is installed correctly (Note: Power is not connected
until after verifying Steps 1 – 7)
3
Verify connections between the TS4000H Base Unit and Interface Module
4
Verify connections between the TS4000H Base Unit and any control room devices
5
Make sure that the TS4000H cover is securely installed
6
Make sure to turn off any external devices, such as Trip Amplifiers, PLC devices or
DCS systems until after the start-up sequence has completed
7
Once you are ready to begin start-up, verify that the power supply is connected
properly. The TS4000H is powered by +24 VDC (20 to 36 VDC voltage range). The
TS4000H display outputs a low voltage fault at 18.5 VDC or below
Table 13: Start-up Readiness Checklist
NOTE:
To protect the system from shorting, the +24 VDC wire(s) to the power supply(s) should
be connected after the readiness checklist is verified. The TS4000H is designed to
continuously monitor the presence of hazardous gas leaks; a power switch is not
included for the TS4000H to prevent accidental system shut down.