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ag真人游戏官网 MTL5011B安全栅DI开关量

LED indicators Green: power indication Yellow: status of channel (on when outputs are energised) Red: LFD indication (on when line fault detected) Maximum current consumption 40mA at 20V 35mA at 24V 25mA at 35V Maximum power dissipation 0.75W
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MTL5011B SWITCH/
PROXIMITY DETECTOR
INTERFACE
single-channel, with line fault detection
and phase reversal


 

The MTL5011B enables a safe-area load to be controlled by a switch
or proximity detector located in a hazardous area. A relay output
is provided. Phase reversal control allows an alarm condition to be
signalled for either state of the sensor. A selectable line fault detect
(LFD) facility detects an open or short circuit in the field circuit.

detectors
Voltage applied to sensor
7 to 9V from 1kΩ ±10%
Input/output characteristics
Normal (reverse) phase:
 output energised (de-energised) if Iin >2.1mA or Rin <2kΩ
 output de-energised (energised) if Iin <1.2mA or Rin >10kΩ
Hysteresis: 200µA, typical
Line fault detection (LFD)
User-selectable, via switches on the top of unit. Line faults are
indicated by an LED. A detected line fault de-energises the
relay.
Open-circuit alarm on if Iin<100µA
Open-circuit alarm off if Iin>250µA
Short-circuit alarm on if Rin<100Ω
Short-circuit alarm off if Rin>360Ω
Note: Resistors must be fitted when using the LFD facility with a contact input
500Ω to 1kΩ in series with switch
20kΩ to 25kΩ in parallel with switch
Phase reversal
User-selectable, via switches on the top of unit.
Relay type
Single-pole changeover relay
Note: reactive loads must be adequately suppressed
Relay characteristics
Response time: 10ms maximum
Contact rating: 250V ac, 2A, cosø >0.7
40V dc, 2A, resistive load



LED indicators
Green: power indication
Yellow: status of channel (on when outputs are energised)
Red: LFD indication (on when line fault detected)
Maximum current consumption
40mA at 20V
35mA at 24V
25mA at 35V
Maximum power dissipation
0.75W at 24V
0.8W at 35V
Isolation
250V ac or dc between power supply, hazardous-area circuits
and relay outputs
Safety description (each channel)
10.5V, 800Ω, 14mA, Um = 250V rms or dc


 
1、安全栅应安装在非危险场所。

2、安全栅通往现场(危险场所)的软铜导线截面积必须大于0.5mm²。

3、连接导线的绝缘强度大于500V。

4、本安端(有蓝色标记)和非本安端电路配线,不得接错和混淆。本安导线宜选用蓝色作为本安标记。本安导线和非本安导线在汇线槽中应分开铺设,采用各自保护套管。安全栅的本安侧,不允

许混淆有其它电源,包括其它本安电路的电源。

5、安全栅与一次仪表组成本安安全防爆系统时,必须经国家指定的防爆检验机构检验认可。PH系列安全栅安全栅由国家防爆电气监督检验中心,给出的Co,Lo分布参数是相对与ⅡC级(氢气级)

的最大允许值对于ⅡB级环境可把该参数乘以3,对于ⅡA级环境可把该参数乘以8。传输线选用不同规格的电缆时,其本身的电缆参数应予高度重视,不得超过规定值。

6、对安全栅进行单独通电调试时,必须注意安全栅的型号、电源极性、电压等级及安全栅外壳接线端上的标号。

7、严禁用兆欧表测试隔离安全栅端子之间的绝缘性。若要检查系统线路绝缘性时,应先断开全部安全栅接线,否则会引起内部器件损坏。
SPECIFICATION
See also common specification
Number of channels
One
Location of switch
Zone 0, IIC, T6 hazardous area
Div. 1, Group A hazardous location
Location of proximity detector
Zone 0, IIC, T4–6 hazardous area if suitably certified
Div. 1, Group A hazardous location
Safe-area output
One relay with changeover contacts
Hazardous-area input
Input conforming to NAMUR/DIN 19234 standards for proximity

 

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