
Delay Relay Output Board Option | Hydrastep 2468CB and 2468CD Manual |
3b.3.1.3 Relay Energisation (‘In Steam’ or ‘In Water’) - SW5
This is a
3b.3.1.4 Electrode/Alarm Operation (RL1 function only) - SW6
Relay 1 can be configured to receive either an electrode input or it can be used as the ‘system fault’ relay. The two positions are detailed in Figure 3b.1 (on page
The system fault output connections are shown in the next section.
3b.3.1.5 System Fault Output
Relay 1 on each delay relay board can be configured to be a system fault relay by setting SW6. When used as a system fault relay the normal state of the relay is energised and a fault state will
The relay will only output faults detected by the input board onto which it is installed. With a dual power supply Hydrastep unit, this means it is necessary to used two delay relay boards (one on each input board) to create a system fault output.
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RL 1 | 1 | PL 2 | PL 2 | 1 | RL 1 |
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| To alarm annunciator | 3 |
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Odd fault relay |
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| Even fault relay |
(RH input board) |
| Alarm off when contacts closed |
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RL 1 |
| PL 2 | PL 2 | RL 1 |
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| To alarm annunciator | 4 |
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Odd fault relay |
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| Even fault relay |
(RH input board) |
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Alarm off when contacts open (Switch SW6 set for fault signal operation)
Note: Systems with a local display have an
| 24685034 |