SMLA-2-美國(guó)原裝詳細(xì)介紹
SMLA-2
過(guò)程測(cè)量和控制儀器 ? 信號(hào)調(diào)節(jié)器和發(fā)射器 ? SMLA-SERIES
直流輸入現(xiàn)場(chǎng)可配置限報(bào)警
smla-1（行程單、雙刀雙擲，5A）smla-2（單/雙行，2個(gè)單刀雙擲，5A）
直流電壓和電流的現(xiàn)場(chǎng)可配置輸入范圍
獨(dú)有的“動(dòng)態(tài)死區(qū)”防止虛假的旅行
在一個(gè)預(yù)先設(shè)定的直流輸入電平提供繼電器觸點(diǎn)閉合
可編程的高或低設(shè)定值
故障/閉鎖操作
可選的120 / 240 VAC輸入功率
產(chǎn)品描述
SMLA-1 single setpoint and SMLA-2 dual setpoint limit alarms offer flexible, wide-ranging DC input capability. Voltage spans from 10 mV to 200V and current spans from 1 mA to 100 mA can be field configured. Bipolar inputs are also accepted. Both models offer configurable latching, failsafe and HI/LO operation. The SMLA-1 and SMLA-2 also include 0.25% to 50% adjustable deadbands and selectable 120/240 Vac input power.
Models SMLA-1 and SMLA-2 are equipped with a dual function diagnostic LED. The green center LED indicates line power and input signal status. Active line power is indicated by an illuminated LED. If the center LED is off, check line power and the wiring connection. If the input signal is above 100% full scale, the LED will flash at approximately 8 Hz. Below 0%, the flash rate is approximately 4 Hz.
The single setpoint SMLA-1 and the dual setpoint SMLA-2 provide the following relay outputs: SMLA-1 Single Trip (DPDT, 5A); SMLA-2 Single/Dual Trip (2 SPDT, 5A). Setpoints are top accessed multi-turn potentiometers.
The field configurable SMLA-1 and SMLA-2 limit alarm setpoints can be configured for HI, LO, latching or failsafe trip operation. Non-latching HI and LO setpoints have respective HI and LO deadbands. In a tripped condition, the setpoint is exceeded and the appropriate red LED will illuminate. The trip will reset only when the process falls below the HI deadband or rises above the LO deadband. To reset a latched setpoint the signal must be in the safe region and the line power turned off for at least 5 seconds. For proper deadband operation, a HI setpoint must always be set above a LO setpoint.
In failsafe operation, the relay is energized when the process is below the HI setpoint or above the LO setpoint (opposite for nonfailsafe). In the failsafe mode, the relays go to the tripped condition when the power fails.
The input must remain beyond the setpoint for 100 milliseconds, uninterrupted, to qualify as a valid trip condition. Likewise, the input must fall outside the deadband and remain there for 100 milliseconds to return the alarm to an untripped condition. This effectively results in a “dynamic deadband” - based on time - in addition to the normal deadband.
Specifications
INPUT
Voltage Input (Unipolar or Bipolar):
Range: 10 mV, 20 mV, 50 mV, 100 mV, 200 mV, 500 mV, 1V, 2V, 5V, 10V, 20V, 50V, 100V, 200V (dip-switch selectable)
Impedance: >100 kΩ
Overvoltage: 400V max
Current Input (Unipolar or Bipolar):
Range: 1 mA, 2 mA, 5 mA, 10 mA, 20 mA, 50 mA, 100 mA (dip-switch selectable)
Impedance: 20 Ω typical
Overcurrent: 200 mA max
Overvoltage: 60 Vdc
Common Mode (Input to Ground): 1000 Vdc max
LED Indications:
Input Range (Green):
>100% Input: 8 Hz flash
<0% Input: 4 Hz flash
Setpoint (Red):
Tripped: Solid red
Safe: Off
Limit Differential (Deadband):
>50 mV/5 mA: 0.25% to 50% of span
<50 mV/5 mA: 1% to 50% of span
Response Time:
Dynamic Deadband: Relay status will change when proper setpoint/process condition exists uninterrupted
for 100 msec
Normal Mode (Analog Filtering): <250 msec, (10 to 90%)
Setpoint:
Effectivity: Setpoints are adjustable over 100% of the selected input span
Repeatability (Constant Temp):
>50 mV/5 mA: 0.1% of full scale
<50 mV/5 mA: 0.2% of full scale
Stability:
Line Voltage: ±0.01%/% max
Temperature: ±0.05% of full scale/°C max
Common Mode Rejection: DC to 60 Hz: 120 dB
Isolation: 1000 Vdc between contacts, input and power
ESD Susceptibility: Meets IEC 801-2, Level 2 (4 KV)
Humidity:
Operating: 15 to 95 %RH @ 45°C (113°F)
Soak: 90 %RH for 24 hours @ 65°C (149°F)
Temperature Range:
Operating: 0 to 60°C (32 to 140°F)
Storage: -15 to 70°C (5 to 158°F)
Power: 120/240 Vac ± 10%, 50 to 60 Hz selectable, 2 W typical, 5 W max
Relay Contacts:
SMLA-1: DPDT (2 Form C)
SMLA-2: 1 SPDT (1 Form C) per setpoint
Current Rating (Resistive): 120 Vac: 5A; 240 Vac: 2A; 28 Vdc: 5A (external relay contact protection
is required for use with inductive loads)
Material: Silver-Cadmium Oxide
Electrical Life: 105 operations at rated load
Mechanical Life: 107 operations
Latch Reset Time: 5 seconds
Weight:
SMLA-1: 209 g (0.46 lb)
SMLA-2: 282 g (0.62 lb)
產(chǎn)品編號(hào) 產(chǎn)品描述
SMLA-1 Single setpoint DC input field configurable limit alarm
SMLA-2 Dual setpoint DC input field configurable limit alarm
Accessories
SKT-DR-11P 11-pin socket, DIN rail mount
SKT-SM-11P 11-pin socket, surface mount
SM-RAIL-2 35 mm DIN rail, 2 m (6.6') length
SMRS Retaining spring (secures limit alarm module into DIN rail or surface mount socket)
SMLA-1信號(hào)調(diào)節(jié)器 美國(guó)omega
SMLA-2信號(hào)調(diào)節(jié)器 美國(guó)omega
SMLA-TC信號(hào)調(diào)節(jié)器 美國(guó)omega
SMLA-2
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