11
Technical Support: +44(0)23 9269 6638 (option 3)
PAK200789_02A July 2019 ©2019 ELMDENE INTERNATIONAL LTD
OP1 & OP2
LEDs #5 or #6
Condition
Possible Cause
Action
GREEN
Normal operation
No faults.
No action
YELLOW
No Output
Output fuse fail
Output overload or
short circuit.
Check and replace output fuse.
Disconnect and test output load.
NOTE: after applying mains power – if red LED is ON (not flashing), this indicates a failed calibration check, although a calibration fault
is not indicated via the GEN fault relay. This fault should never be seen, but in the extremely rare event that it does, the PSU will
operate using default values, but some functions may be compromised, and you are strongly advised to contact Elmdene Technical
Support to return the product. Indication of a calibration fault will be suppressed (but not cleared) when the battery is connected.
D
EVELOPER
S
ECTION
Figure 4 – Terminal layout and mode selection
Dual-Path power transmission monitoring feature
43.
The 2405ST PSU has an optional mode designed to
work with systems that require dual-power
transmission paths. When enabled, the PSU compares
the outputs and reports a load imbalance of more than
10% as an OUTPUT FAULT (LED 4 x6 Flashes) and is
enabled by removing the header marked
OP1
≠
OP2
This mode meets the requirements of EN54-13 Section
5.3.3.1 S
FAULT
and Section 5.3.4.2 P
FAULT
warning
conditions, for loads above 200mA.
It is still necessary for the connected equipment to be
designed to accept two separate power inputs, such
that a short to ground of either power transmission
path, will not inhibit the equipment performance.
PSU Addressable Data link communication protocol
44.
The 2405ST PSU has an addressable RS485 communication port, that can be enabled to provide the
internal PSU data, and includes; Mains Voltage; Output1 Voltage/Current; Output2 Voltage/Current;
Battery Voltage; Charger Current; Charger setting; GEN Fault condition; EPS Fault condition; Diagnostics
fault status (condition 1-6), Battery temperature, Charger status, unit address
45.
To enable this feature and obtain the protocol guide, please contact Elmdene Technical Support
Mains
Input
Load
Outputs
Battery
Connection
GEN & EPS
Relay Outputs
‘No battery’
Select
Unit Add
Select
RS485
Link
Temp Probe
Inputs
OP2
Fuse
PTC Battery
Fuse
OP1 ≠ OP2
Select
LED Status
Indicators
Charger
Setting
OP1
Fuse
Mains
Fuse
OP1≠OP2
DUAL-PATH ACTIVE
DUAL-PATH MODE FAULT SIGNALLING
-
PSU LOAD OUTPUT
1 & 2
+
DU AL PATH LOAD I NPUT
-
+
-
+
•
FA ULT SIGNALLED WHEN
M O RE T HAN 1 0%
I M BALANCE BETWEEN
P A THS
RE F: E N 54-13 5 .3 .4.1 S
FAULT
& 5 .3 .4 .2 P
FAULT
V ALUES
+
-
* E quipment must be have 2 s eparate power inputs c apable of
withs tanding a s hort to ground on one path
