Power Connections And Protective Earth; Input Signal Connections; Connections For Remote Keypad - Fema Electronica B Series User Manual

1.7 Power connections and protective earth

1. Unscrew the screws from the back cover and remove the
back cover (see section 1.5).
2. Pass the power cable through the power cable gland (see
section 1.4).
3. Prepare the power cables so that the earth wire is 20 cm
longer than the other cables (see Figure 1).
Phase (+)
Neutral (-)
Earth
Figure 1 - Longer earth wire
4. Connect the earth wire to the internal fixed screw 'PE'
(see Figure 2) located at the inside of the back cover. The
instrument internally connects the back cover metallic
'PE' internal fixed screw
Power cable gland
Figure 2 - Location of the internal 'PE' fixed screw and power cable gland

1.8 Input signal connections

1. Unscrew the screws from the back cover and remove the
back cover (see section 1.5).
2. Locate the input signal terminal (see section 1.4).
3. Pass the signal cable through the signal cable gland (see
section 1.4).
4. Connect the input signal cables (see Figure 4).
5. The connections label attached to the outside of the in-
strument has some free space left to write the color or
local code for each cable.

1.9 Connections for remote keypad

The 4 pin terminal located beside
the input signal module allows to
replicate a remote version of the
front keypad. Connect 4 cables
for front keys 'SQ' (<), 'UP' (5)
and 'LE' (3) and for the com-
mon. Pass these cables through
the 'remote keypad' cable gland
(see section 1.4).
20 cm
Screws
GND
SQ
UP
LE
FEMA ELECTRÓNICA . SERIES B . Models Bxx-C1
structure with the front metallic structure through an in-
ternal green-yellow cable. (dotted cable at Figure 3).
5. Connect phase and neutral (in AC power) or positive and
negative (in DC power) to the internal power terminal.
6. The connections label attached to the outside of the in-
strument has some free space left to write the color or
local code for each cable.
7. To comply with security regulation 61010-1, add to the
power line a protection fuse acting as a disconnection
element, easily accessible to the operator and identified
as a protection device.
Power 'H'
Power 'L'
Power Terminal
PE
Figure 3 - Power connections
Channel B
Reset
Input Signal
Channel A Input 'A' for impulses
Channel B Input 'B' for impulses
Reset Reset connection
Vexc Excitation voltage
0V Common
Figure 4 - Signal connections
500 mA time-lag fuse
1000 mA time-lag fuse
(orange)
N
L
fuse
PE
Channel A
Vexc.
0V
Rst B A Vexc 0V
7