Mtl5018 Single-Pole, Changeover Relay, Two-Channel, Switch/Proximity Detector With Line Fault Detection And Phase Reversal; Mtl5018Ac Single-Pole, Changeover Relay, Two-Channel, Switch/Proximity Detector With Line Fault Detection And Phase Reversal - MTL MTL5000 Series Instruction Manual

Hazardous area Safe area
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Figure 6.14: MTL5017 wiring diagram and connections
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)
7 Line fault detection
8 Output (Ch 2)
9 Output (Ch 2)
10 Line fault detection
11 Output (Ch 1)
12 Output (Ch 1)
13 Supply –ve
14 Supply +ve
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Figure 6.15: Test circuit for MTL5017
6.7.3 Testing
Make the safe- and hazardous-area connections shown in figure 6.15
and check the status of the output contacts for each channel in turn (with
a 22kΩ resistor connected to the other channel) as shown in table 6.6.
Table 6.6
Output
Input relay
(11-12, 8-9)
Open-circuit Open
Short-circuit Closed
680Ω Closed
22kΩ Open
6.8 MTL5018 single-pole, changeover
relay, two-channel, switch/proximity
detector with line fault detection and
phase reversal
The MTL5018 modules enable each of two safe-area loads to be relay-
controlled by switches or proximity detectors in a hazardous area. Line
fault detection (LFD) and output phase reversal (see 3.1.3) facilities are
included.
6.8.1 Wiring connections
See figure 6.16 for wiring connections.
Note: Reactive loads must be adequately suppressed.
6.8.2 Line fault detection
(See section 3.1.4 for definition of a line fault)
On each channel, input line faults (open- or short-circuit) are indicated
by an LED and the de-energising of the output.
INM5000-6 Jul 2010
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Hazardous area
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Figure 6.16: MTL5018 wiring diagram and connections
Terminal
1
2
3
4
5
6
7
8
9
10
11
12
13
14
LFD is enabled/disabled by switches located on the top of the module.
Note that if the LFD facility is enabled for switch inputs, the resistors
shown in figures 6.16 and 6.17 MUST be fitted.
6.8.3
Make the safe- and hazardous-area connections shown in figure 6.17
and check the status of the output contacts for each channel in turn (with
a 22kΩ resistor connected to the other channel) as shown in table 6.7.
Line-fault
relay
(7 & 10)
Figure 6.17: Test circuit for MTL5018
Open
6.9
Open
Closed
Closed
The MTL5018AC modules enable each of two safe-area loads to be
relay-controlled by switches or proximity detectors in a hazardous area.
Line fault detection (LFD) and output phase reversal facilities are included
(see section 3.1.3 ).
6.9.1
See figure 6.18 for wiring connections.
Note: Reactive loads must be adequately suppressed.
6.9.2
(See section 3.1.4 for definition of a line fault)
On each channel, input line faults (open- or short-circuit) are indicated
by an LED and the de-energising of the output. LFD is enabled/disabled
by switches located on the top of the module.
Note that if the LFD facility is enabled for switch inputs, the resistors
shown in figures 6.18 and 6.19 MUST be fitted.
16
Safe area
Function
Input –ve (Ch 1)
Input +ve (Ch 1)
Earth leakage detection
Input –ve (Ch 2)
Input +ve (Ch 2)
Earth leakage detection
Normally-closed contact (Ch 2)
Common (Ch 2)
Normally-open contact (Ch 2)
Normally-closed contact (Ch 1)
Common (Ch 1)
Normally-open contact (Ch 1)
Supply –ve
Supply +ve
Testing
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MTL5018AC single-pole, changeover
relay, two-channel, switch/proximity
detector with line fault detection and
phase reversal
Wiring connections
Line fault detection