Start-Up; 1: Required Materials; 2: Preliminary Checks; Section 4: Start-Up And Fault Management - Honeywell H-S81-HS Operation Manual

Section 4: Start-Up and Fault Management

This section describes the different stages of system start up and explains the operation to be car-
ried out to reset the various system faults.
NOTE: All operations described in this chapter must be carried out by skilled staff, adopting all
suitable protective measures against Electro Static Discharges.

4.1 Start-Up

This paragraph describes the operations to be carried out upon first system startup.
4.1.1 Required Materials
To carry out all the start up stages properly, the equipment below is required:
• Digital multimeter
• 1 x 0-20 mA current generator to simulate analog sensors
4.1.2 Preliminary Checks
1. Make sure that the earth connections are made properly. Check also that system earth
resistance does not exceed 20 Ohms.
2. Carry out a visual inspection of the connections on the terminal block inside the switchboard;
in particular, check the polarity of battery and power cables.
3. Make sure that all the modules are properly installed into the racks with their fixing screws
tightened.
4.1.3 Checks on Cables from Field Devices
NOTE: Before carrying out these checks, disconnect the cables by opening the terminal blades
or disconnecting the flat cable connectors from the termination modules to avoid damaging I/O
modules.
Balanced Input Cables (S81-F3002 Modules)
1. Make sure that both conductors (+L/-L) are insulated from the earth.
2. Disconnect the shield from the shield bar and make sure it is insulated from the earth.
3. Make sure that the resistance between the positive and negative of the line is of approximately
5600 Ohms.
Analog Input Cables (S81-F4001, S81-F4002, S81-F4003 Modules)
1. Make sure that the conductor (+L/-L) is insulated from the earth.
2. Make sure that the positive and negative (+25V/-25V) of the power supply are insulated from
earth ground.
3. Disconnect the shield from the shield bar and make sure it is insulated from the earth.
Addressable Loop Cables (S81-F7002, S81-F7007, S81-F7009, S81-F7010
Modules)
1. Make sure that the 4 conductors (+Lout/-Lout and +Lin/-Lin) are insulated from the earth.
2. Disconnect the shield from the shield bar and make sure it is insulated from the earth.
3. Make sure that there is no short circuit between terminals +Lout and -Lout.
4. Make sure that there is no short circuit between terminals +Lin and -Lin.
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