Manufacturer:
Eaton - MTL Product Line
Product Name:
9121-IS
Product Description:
Power Supply
Profile:
FOUNDATION Power Supply/Conditioner
More Information:
The 9121-IS is a fieldbus repeater isolators which repeats the fieldbus
signal from a safe area, Zone 2 or Division 2 fieldbus to an
intrinsically safe fieldbus for connection to devices in Zone or Division
1. The 9121-IS provides 0 to 115mA with short circuit/overload
protection, typically powering up to 5 x 20mA field devices in Gas Group
IIC and several may be multidropped on a single fieldbus host port. 250V
ac isolation between the power, host and IS fieldbus connections ensures
robust operation even in an electrically noisy environment.
The 9121-IS has a switch selectable terminator on the host side and a
fixed terminator on the IS side. In addition several host fieldbus cards
require power from the bus so there is an option of providing power on
the host connection. There is a choice of pluggable screw or spring clamp
terminals for simple installation. The 9121-IS can be used with any
fieldbus device that is certified as intrinsically safe to the FISCO
physical layer profile. In addition with the 9321-SC spur connector it is
compatible with any fieldbus device which is certified as intrinsically
safe to the entity physical layer profile.
The NET9000 range of fieldbus products from MTL have a similar
environmental specification to field transmitters, guaranteeing reliable
operation in a harsh process environment when this is required -
corrosion resistance to G3; -40 to +70C; vibration and shock resistance
to the exacting Lloyds standards. The unit is compact, requiring only
42mm of DIN rail width, minimising the space required.