E2S Warning Signals
Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: +44 (0)208 743 8880
Document No. D199-00-621-IS
Issue 2
27-10-22
Sheet 15 of 15
19) Product Coding for Fault Resistor and Customer EOL Resistor
The customer is able to identify the resistor values chosen on purchase from the product code. This is represented by the last two
characters:
STExB2X05DC024AS1S1R/A-
AFZ
•
The first A character denotes the value of the Fault Resistor (FR). Default value is 2.2K Ohm (Code = A) unless an
alternative value is requested when ordering.
•
The second F character denotes the value of the Current Sense Resistor (CSR). Default value is 3.3K Ohm (Code = F)
unless an alternative value is requested when ordering.
•
The third Z character denotes the value of the unit End Of Line Resistor (EOL). By default no EOL resistor is factory fitted
(Code = Z). A factory fitted EOL resistor can be specified when ordering.
The values of resistors available are shown in table 6 below.
Code
Resistor Value
Default resistor coding is as follows:
STExB2X05DC024AS1S1R/A-
AFZ
Example of a custom requirement resistor coding:
STExB2X05DC024AS1S1R/A-
GEF
Where the (FR) Fault Resistor is (G = 3.9 kΩ)
(CSR) Current Sense Resistor is (E = 2.7 kΩ)
(EOL) End Of Line resistor is (F = 3.3 kΩ)
A
2.2 kΩ
B
1.0 kΩ
C
1.5 kΩ
D
1.8 kΩ
E
2.7 kΩ
F
3.3 kΩ
G
3.9 kΩ
H
4.7 kΩ
J
5.6 kΩ
K
6.8 kΩ
L
8.2 kΩ
M
11 kΩ
Z
None Fitted
Note
: To utilise the full monitoring functionality the 4-wire configuration is recommended. An EOL resistor is not required for this
configuration.
The alternative 2-wire configuration requires an EOL resistor to be fitted. The EOL resistor can be specified during ordering and
factory fitted or selected and fitted during the beacon installation.
See section 9 for EOL resistor location and wattage requirements. E2S recommends a value of 2.2K Ohm. If an alternative value is
required, please see section 15-2.
Both the (FR) Fault Resistor and (CSR) Current Sense Resistor are factory fitted and cannot be user replaced.
