3.1 Delay Relay Output Board; 3B.3.1.1 Configuring The Delay Relay Output Board; 3B.3.1.2 Electrode/Relay Selection (Relays Rl1, Rl2, Rl3 & Rl4) - Sw1 To Sw4 - Emerson Hydrastep 2468 series Operating Manual

Hydrastep 2468CB and 2468CD Manual
3B.3.1 DELAY RELAY OUTPUT BOARD

3b.3.1.1 Configuring the Delay Relay Output Board

WARNING
1. Isolate the 2468 electronics enclosure from its power supplies.
2. Gain access to the delay relay output PCB and set the relevant switches for the required
function.
3b.3.1.2 Electrode/Relay Selection (Relays RL1, RL2, RL3 & RL4) - SW1 to SW4
Four identical switches are provided, one for each relay (but see SW6) each having four sets
of contacts. This allows coded selection for one of 16 electrodes for each switch and
therefore for each relay in the case of the single input card. When dual input cards are fitted,
odd numbered electrodes feed into one input card with the even numbered electrodes being
fed into the other input card. Each input card then offers any mounted relay output card the
choice from its electrode inputs, with the resultant selectivity as shown in Table 3b.1.
Switch SW1, 5W2, 5W3 or 5W4 Settings for
RL1 to RL4 respectively
Switch Contacts
1
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
Example:
24685034
Mains voltages are present in this instrument when power
is connected. De-energise before opening front cover.
2 3 4
On On On
On On On
Off On On
Off On On
On Off On
On Off On
Off Off On
Off Off On
On On Off
On On Off
Off On Off
Off On Off
On Off Off
On Off Off
Off Off Off
Off Off Off
Table 3b.1 - Electrode selections for relays RL1 to RL4
Single Input Board - Electrode 13 selected.
Dual Input Boards: Odd input board - Electrode 25 selected
Even input board - Electrode 26 selected.
Delay Relay Output Board Option
Electrode Selection
One Input
Card Odd I/P Card
1 1
2 3
3 5
4 7
5 9
6 Ii
7 13
8 15
9 17
10 19
11 21
12 23
13 25
14 27
15 29
16 31
Two Input Cards
Even I/P Card
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
1 2 3
OFF
3b-7
4