E2S Warning Signals
Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: +44 (0)208 743 8880
Document No. D199-00-001-IS
Issue 7
13-05-22
Sheet 7 of 8
Config.
Voltage
Configuration Description
Features
Product
Option
Identifier
See documents D190-06-001 for DC schematic diagrams.
1a
DC
Single Stage Configuration
•
Line monitoring
•
Positive Switching
1
1b
DC
Two Stage Configuration
•
Common Negative
•
Positive Switching
1
1c
DC
Three/Four Stage Configuration
•
Common Negative
•
Positive Switching
1
2
DC
Three/Four Stages. Voltage Free 2nd, 3rd &
4th Stage Activation Configuration
•
Common Positive
•
Customer Set H1 & H2 to Negative
Switching
1
3
DC
Two Stage Configuration
•
Independent Stage Input
•
Reverse Polarity Stage Monitoring
1
4
DC
Two Stage Configuration
•
Line Stage Monitoring (Use suitable
monitoring relays/ modules)
•
Not to be used in reverse polarity
monitoring
Y
5
DC
Two/Three Stage Voltage Free Activation
Configuration
K
6
DC
Three/Four Stage Configuration
•
Independent Stage Input
•
Line Stage Monitoring (Use suitable
monitoring relays/ modules)
•
Positive Switching (Default)
V
See documents D190-06-005 for AC schematic diagrams.
1a
AC
Single Stage Configuration
1
1b
AC
Three/Four Stage Configuration
1
2
AC
Two/Three Stage Voltage Free Activation
Configuration
K
Table 4: Summary of Wiring Options.
9) End of Line Monitoring (DC Units)
All DC units have a blocking diode fitted in their supply input
lines. An end of line monitoring diode or an end of line
monitoring resistor can be connected across the +ve and
–ve
terminals in the flameproof chamber. See D190-06-001 for
details.
If an end of line resistor is used it must have a minimum
resistance value of 3k3 ohms and a minimum wattage of 0.5W
or a minimum resistance value of 500 ohms and a minimum
wattage of 2W.
The resistor must be connected directly across the +ve and -
ve terminals as shown in the following drawing. The resistor
leads should be kept as short as possible.
Figure 10: End of Line Resistor placement.
9.1. Custom DC Multi-Stage End Of Line Monitoring
An optional 12-way terminal module is available to enable up
to four alarm stages to be activated from three DC voltage
output channels. The three alarm stage activation inputs can
be independently monitored.
Refer to Schematic D190-06-001, Config. 6.
Specify Product option ‘V’ when ordering.
Spare part code for field installation: SP78-0001
