BASIC INFO
MTL5546/Y Safe Isolators Isolating Driver for 4/20mA HART Valve Positioners with Line Fault Detection
The MTLx546 accepts a 4/20mA floating signal from a safe-area controller to drive a current/pressure converter (or any other load up to 800ohm) in a hazardous area. For HART valve positioners, the module also permits bi-directional transmission of digital communication signals. Process controllers with a readback facility can detect open or short circuits in the field wiring: if these occur, the current taken into the terminals drops to a preset level. The MTL4546C and the MTLx546Y are very similar to the MTLx546 except that they provide open circuit detection only (i.e. no short-circuit detection).
SPECIFICATION
See also common specification
Number of channels
One
Location of I/P converter
Zone 0, IIC, T4–6 hazardous area if suitably certified
Div. 1, Group A, hazardous location
Working range
4 to 20mA
Digital signal bandwidth
500Hz to 10kHz
Maximum load resistance
800ohm (16V at 20mA)
Minimum load resistance
90ohm (short-circuit detection at < 50ohm)
Output resistance
> 1Mohm
Under/over range capability
Under range = 1mA
Over range = 24mA (load ≤ 520ohm)
Input and output circuit ripple
< 40µA peak-to-peak
Transfer accuracy at 20°C
Better than 20µA
Temperature drift
< 1.0µA/°C
Response time
Settles within 200µA of final value within 100ms
Communications supported
HART
LED indicator
Green: power indication
Maximum current consumption (with 20mA signals into 250ohm load)
35mA at 24V dc
Power dissipation within unit (with 20mA signals into 250ohm load)
0.8W at 24V
MTL5018AC
MTL5501-SR
MTL5510
MTL5510B
MTL5511
MTL5513
MTL5514
MTL5514D
MTL5516C
MTL5517
MTL5521
MTL5522
MTL5523
MTL5523V
MTL5524
MTL5525
MTL5526
MTL5541
MTL5541A
MTL5541AS
MTL5541S
MTL5544
MTL5544A
MTL5544AS
MTL5544D
MTL5544S
MTL5546
MTL5546Y
MTL5549
MTL5549Y
MTL5573
MTL5575
MTL5576-RTD
MTL5576-THC
MTL5581
MTL5582
MTL5582B
MTL5531
MTL5532
MTL5561
MPA5500
MTL5051
MTL5053
MTL5314
MTL5599
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Lily
HONGKONG XIEYUAN TECH CO., LIMITED
T: 86-027-85581877 F: 86-027-85309780
Mail:lily@whxyauto.com
Ad: 7-A16,Caishen Commercial Plaza,Hankou Railway Station,Wuhan, Hubei, China
Web: www.hkxytech.com
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