TC12 Installation, Commissioning & Maintenance Handbook
Voltage Monitoring Transformer
A Voltage monitoring transformer (part number 667/7/25172/000) is used per
Outstation when equipped with LMU facilities. The red and black wires connect to
the lamp supply mains live and neutral being monitored (Red to Live and Black to
N
3 e
to pin 50 (ZXO
ZXO input, pins 49 and 50, see note earlier in this section).
he sensor should then be anchored to a suitable point in the cabinet (using the
rooves on
ontrollers operating from a common mains supply is
oltage monitoring
cted as described
a available input is used for the
second controller voltage monitor transformer. This input will be configured as the
ut (see handset commands). The current
d consecutively to
ote: The above arrangement does not provide independent monitoring of each
amps off on the first controller will stop all
acceptable an alternative configuration is
mains supply to the first voltage monitoring
itor to Pl1 input 1, and
red. ontroller 1 current inputs at PL1
Voltage Sensors
ulatory signs, each controller output that is to be
e.g. switched signs) the state of
e drive to the monitored aspect is required. In the case of Red lamp monitoring
red lamp mains state indication.
two
p o
a) Using suitably configured green confirm outputs from the controller. The output
connected to the appropriate input on PL2.
tage confirm bits if the following situations
Phase overlaps from one stage to another.
Staggered phase introduction due to phase delays or intergreens.
eutral). The range and white output wires connect to PL1. Referring to Figure
5 the orang wire connects to pin 49 (ZXO Input +) and the white wire connects
Input -. LMU Input 24, pins 47 and 48, is internally connected to the
o
T
g the sensor as a guide).
Monitoring Dual Controllers
A facility to monitor two c
provided (e.g. for use with some dual pelican controllers). The v
a en r are connend current s se transformers for the first controlle
ll these have been allocated the nextbove. When a
second supply voltage monitoring inp
sense transformers for the second controller are then connecte
th g ie remainin nput numbers.
Nlcontroller. Switching the
monitoring. If this is not
available:
Connect an unswitched
transformer (output to PL1 pins 49 and 50).
Connect the first controller lamp supply mon
configure this input as not monito
Proceed as described above - starting c
input 2.
With the exception of the reg
monitored requires a means of determining the state of the green lamp drive
voltage for that output. For single aspect outputs (
th
there is an additional requirement for a
For normal lamp monitoring (NOT RED LAMP MONITORING) there are
ossible meth ds of obtaining the mains state inputs.
is
Note: It may not be possible to use s
exist:
666/HE/43100/000 Page 82 Issue 9