Dwyer MTL5045 User Manual
Page 40
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INM5000-6 Jul 2010
current signal. The current output follows the rotational
speed change according to the preset time
-Br
The value of the output current which indicates a
broken wire on the input circuit.
I-Sh
The value of the output current indicating a short circuit on
the input circuit.
ICM
Input circuit monitoring
off - disabled
Br - wire-break monitoring
Sh - short-circuit monitoring
Both - wire-break and short-circuit monitoring
Sud
Start-up time delay in seconds. The start-up time delay
function is activated when the normally open contacts
across terminals 7 and 8 close, energizing the limit
value relay for a preset time. Consequently, an
under-speed indication is inhibited during system
start-up.
Soft
Software version number.
9.2
MTL5531 voltage/current converter
Device provides hazardous-area current and voltage inputs (only one to
be used at any one time). It has short circuit protected voltage input and
active current output. Input, output and power supply are galvanically
isolated.
9.2.1
Wiring connections
Hazardous area terminals
1 & 2
Current input (passive).
3 & 4
Voltage input.
Safe area terminals
5 & 6
Output circuit.
MTL5531-xxx Li - active current output.
MTL5531-xxx LU - voltage output.
7 & 8
Power supply connection.
9.2.2
LED indications
Pwr Supply
voltage:
(Green indicates that device is operational)
9.2.3
Mounting instructions
The MTL5531 is suitable for either panel or DIN-rail mounting.
9.2.4
Transfer characteristics
9.3
MTL5536 potentiometer converter
Provides repeat of a potentiometer input through an analogue signal in
the safe area. Accepts 3- or 5- wire potentiometer input, 800
Ω to20kΩ
input range, with line resistance <50
Ω. Two output versions are
available 0 to 20mA (MTL5536-11Li) or 0 to 10V (MTL5536-11LU). No
configuration is required, and input, output and power supply are
galvanically isolated.
9.3.1
Wiring connections
Hazardous area terminals
1 & 3
3- and 5- wire potentiometer power.
2
Potentiometer wiper
4 & 5
5-wire potentiometer sense.
Safe area terminals
7 & 8
Output:
MTL5536-11Li : 0 to 20mA output.
MTL5536-11LU : 0 to 10V output
11 & 12 Power supply connection.
9.3.2
LED indications
Pwr Supply
voltage:
(Green indicates that device is operational)
9.3.3.
3- or 5-wire operation
3-wire configuration gives high enough accuracy for standard
operation. If a higher accuracy is required, or there is a problem with
high resistance lines due to long cable runs, then the 5-wire operation is
recommended.
9.3.4
Mounting instructions
The MTL5531 is suitable for either panel or DIN-rail mounting
Current input
Voltage input
I (mA)
RI (Ω
Ω) Imax (mA)
V
Ri (Ω
Ω)
Vmax
Output circuit
RL (Ω
Ω)
MTL5531-11Li
0/4 to 20
100
< 40
0/2 to 10
50k
< 39
0/4 to 20mA
< 500
MTL5531-11LU
0/4 to 20
100
< 40
0/2 to 10
50k
< 39
0/2 to 10V
> 500
MTL5531-111Li
0 to 20
100
< 40
0 to 10
50k
< 39
4 to 20mA
< 500
MTL5531-112LU
4 to 20
100
< 40
2 to 10
50k
< 39
0 to 10V
> 500
MTL5531-113Li
0 to 10
175
< 40
0 to 5
70k
< 39
4 to 20mA
< 500
MTL5531-115Li
0/2 to 10
175
< 40
0/1 to 5
70k
< 39
0/4 to 20mA
< 500
MTL5531-115LU
0/2 to 10
175
< 40
0/1 to 5
70k
< 39
0/2 to 10V
> 500
MTL5531-119LU
2 to 10
175
< 40
1 to 5
70k
< 39
0 to 10V
> 500