2
TCE is a detection unit utilised to produce electro-sensitive protection
equipment (ESPE), complete with 8.2K
Ω
constant resistance sensor
devices used for the automation of doors and gates. The TCE has 2
independent relay outputs, controlled by 2 separate detection circuits
and its condition is linked to the state of the controlled sensitive device.
If used with suitable electro-sensitive devices and connected up to a
control unit, the TCE will enable the production of a Category 3 safety
device according to Standard EN 954-1. It also has a “Test” input to
use in those control units which provide for the self-diagnosis of safe-
ty devices according to Category 2, Standard EN 954-1.
The TCE detection unit is not a safety device in itself but
simply one of the components which make up a safety device.
!
1.1) Operating principles
The TCE consists in 2 window comparators called “C1” and “C2”,
respectively. These comparators are connected up to 2 output relays,
R1 and R2. As long as the resistance value of the sensitive device
remains within the limits of acceptability (4.725
Ω
÷ 10.925
Ω
) the com-
parators will activate (On) the two output relays. As soon as the sensi-
tive device resistance rises above or drops below said limits, the com-
parators will deactivate (Off) the outputs. The first relay, which controls
OUT1, will deactivate immediately; the second, which controls OUT2,
will deactivate when T1 timer triggers after a delay of approx. 1.5 sec-
onds. These two outputs - one which triggers immediately and one
which is delayed - have been designed in order that they can be con-
nected up to the control units for gate automations. The first output is
connected up to the input which causes the immediate inversion of
the movement of the leaf, e.g. “Photocell” input. The second output is
either connected in such a way that it will stop and prevent the leaf
from moving, e.g. “Stop” input, or directly to the motor power supply
by means of special interface relays.
The “Phototest” input is used in those control units which provide for
self-diagnosis of the safety devices. It enables the user to simulate
the triggering of the sensitive device so s/he can check the TEC is
operating correctly.
When deciding which type of TCE connection to choose
for the safety device, carefully assess the effects of the TCE
triggering in order to ensure the correct resistance category
will be achieved.
!
Warnings
• This manual contains important information regarding safety. Read all
the instructions before proceeding with the installation. Store this man-
ual safely for future use.
• This manual has been especially written for use by qualified installation
technicians.
No information given in this manual can be considered as being of any
interest to end users!
• Any use of TCE other than that described in this manual is forbidden;
improper use can be dangerous and cause personal injury or damage
to property.
• Do not make modifications to any components unless such action is
specified in these instructions. Operations of this type are likely to lead
to malfunctions. NICE disclaims any liability for damage resulting from
modified products.
• The packing materials of TCE must be disposed of in compliance with
local regulations.
The manufacture of protective devices for automatic gates
and doors is subjected to the following provisions:
• EN 12453 Industrial, commercial and garage doors and gates. Safety
in use of power operated doors – Requirements
• EN 12978 - Industrial, commercial and garage doors and gates. Safe-
ty devices for power-operated doors and gates - Requirements and
test methods.
The TCE detection unit must be installed and connected up correctly in
order to produce a safety device. If the necessary provisions are not tak-
en, this will be automatically considered as negligence and deliberate
abuse.
!
1) Description and Application
Only carry out installation once the electricity supply to the
system has been switched off. Disconnect any buffer batter-
ies present.
Mounting
Set the TCE on a surface protected against impact, dust, water and
any other kind of liquid.
!
2) Installation
1
2
3
4
5
6
7
8
9
10
11
Led 1
Led 2
POWER SUPPLY
PHOTOTEST
INPUT 8.2K
Ω
OUT 1
OUT 2
1
