MTL MTL5000 Series, Инструкция по эксплуатации

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14 INM5000-6 Jul 2010
6.4.2 Outputs
The output 1 relay reflects the status of the input and may be configured
to operate in reverse phase (PR) or with line-fault detection (LF). The
output 2 relay may be configured either to follow (slave mode) output 1
or as a line-integrity monitor (LFD) (see 6.4.3).
6.4.3 Line fault detection
(See section 3.1.4 for definition of a line fault)
Line-fault detection and the operational mode of output 2 (ie slave to
output 1 or LFD) are selected by switches located on the top of the
module (see figure 6.8).
When LFD is selected for output 2 and there is a line fault in the sensor
circuit the output 2 relay is de-energised (providing an alarm output).
When LF is selected for output 1, the output 1 relay is de-energised if
there is a line fault in the sensor circuit. Note that resistors must be fitted
when using LFD with a contact input; 500
Ω
to 1k
Ω
in series, and 20k
Ω
to 25k
Ω
in parallel with the switch.
6.4.4 Testing
Make the relevant safe- and hazardous-area connections shown in figure
6.9 for the tests listed in table 6.3. (Figure 6.8 shows the switch positions
for configuring output 2 slave/LFD, output 1 line fault (LF) and phase
reversal (PR)).
Table 6.3
6.5 MTL5015 solid-state two-channel
switch/proximity detector with line
fault detection and phase reversal
The MTL5015 enables each of two safe-area loads to be controlled,
through a solid-state output, by a switch or proximity detector in a
hazardous area. Line fault detection (LFD) and output phase reversal
(see 3.1.3) facilities are included.
6.5.1 Wiring connections
See figure 6.10 for wiring connections.
Phase Line fault Output 1 Output 2 Status Fault
reverse detection Slave Input test switch position relay relay LED LED
Test switch (PR) (LF) (LFD) (terminals 1 & 2) (11-12) (9-8) (yellow) (red)
1 Normal Off LFD (a) i.e. short-circuit Closed Open On On
2 Reverse Off LFD (a) short-circuit (I
sc
=7–9mA) Open Open Off On
3 Normal On Slave (a) short-circuit Open Open Off On
4 Normal Off Slave (a) short-circuit Closed Closed On Off
5 Normal Off Slave open-circuit (V
oc
=7V5–9V5) Open Open Off Off
6 Normal On Slave open-circuit Open Open Off On
7 Normal Off LFD (b) 22k
Ω
Open Closed Off Off
8 Normal Off LFD (c) 680
Ω
Closed Closed On Off
LF
PR
O/P1
ON
SLAVE LFD
Output 2
MTL5014
PWR
Ou
t
pu
t
1 f
o
ll
o
w
s
sensor
Ou
t
pu
t
2
s
lav
es
o
u
t
pu
t
1
Ou
t
pu
t
1 f
o
ll
o
w
s
sensor
Ou
t
pu
t
2 m
on
i
tors
LFD
Ou
t
pu
t
1 f
o
ll
o
w
s
sensor
& LFD
Ou
t
pu
t
2
s
lav
es
o
u
t
pu
t
1
Ou
t
pu
t
1 f
o
ll
o
w
s
sensor
& LFD
Ou
t
pu
t
2 m
on
i
tors
LFD
Ou
t
pu
t
1 i
n
pha
se
wi
t
h
sensor
Ou
t
pu
t
1 i
n
a
nt
i-pha
se
wi
t
h
sensor
(LFD
not
aff
ecte
d)
6
5
4
3
2
1
7
8
9
10
11
12
13
14
Vs–
Vs+
20 to 35V dc
Output 2
relay
Output 1
relay
To earth
leakage
detector
SW
22k W
680 W
a
b
c
+
–
open
Terminal Function
1 Input –ve (Ch 1)
2 Input +ve (Ch 1)
3 Earth leakage detection
4 Input –ve (Ch 2)
5 Input +ve (Ch 2)
6 Earth leakage detection
8 Output –ve (Ch 2)
9 ve (Ch 2)
11 Output –ve (Ch 1)
12 ve (Ch 1)
13 Supply –ve
14 ve
6
5
4
3
2
1
7
8
9
10
11
12
13
14
To earth leakage
detector
SW
22k W
680 W
a
b
c
open
22k W
+
–
Vs–
Vs+
20 to 35V dc
} V
d2
1k W
1k W
+
–
+
–
} V
d1
Ch1
Ch2
+
–
Figure 6.8: Top label of MTL5014 with explanation of switch positions
Figure 6.9: Test circuit for MTL:5014
Figure 6.11: Test circuit for MTL5015
6
5
4
3
2
1
7
8
9
10
11
12
13
14
Vs–
Vs+
20 to 35V dc
To earth
leakage
detector
22k W
680 W
+
–
Resistors required only
for line fault detection
Ch 2
22k W
680 W
+
–
Ch 1
+
–
+
–
Figure 6.10: MTL5015 wiring diagram and connections
Hazardous area Safe area
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