Specifications
42 TZIDC, TZIDC-110, TZIDC-120 42/18-84-EN
9.1.9 Options
Module for analog position feedback
1)
Signal range 4 ... 20 mA (configurable split ranges)
Supply, 2-wire circuitry 24 V DC (10 ... 30 V DC)
48 V DC (20 ... 48 V DC, no ignition
protection)
Characteristic curve
(configurable)
Rising or falling
Deviation < 1 %
IMPORTANT (NOTE)
Without a signal from the positioner (e.g., “no power” or
“initializing”) the module sets the output to > 20 mA (alarm
level)
Module for digital position feedback
1)
Two switches for digital position feedback (position adjustable within
the range of 0 ... 100 %, ranges cannot overlap)
Current circuits acc. to DIN 19234 / NAMUR
Supply voltage 5 ... 11 V DC
Signal current < 1.2 mA Switching state logical “0“
Signal current > 2.1 mA Switching state logical “1“
Direction of action normally logical “0“ or logical “1“
(configurable)
Module for the emergency shutdown function
2)
Supply voltage 24 V DC (20 ... 30 V DC) (galvanically
isolated from input signal)
Safe position is activated when Voltage < 5 V
SIL See "Safety Integrity Level"
A separate 24 V DC signal is normally applied to the emergency
shutdown module, which connects through the signal from the
microprocessor to the I/P module.
When the 24 V DC signal is interrupted, the I/P module executes the
respective safety function, depending on the mechanical construction.
The positioner output 1 is depressurized, and the valve is moved to
the safe position. In case of a double-acting actuator the second
output 2 is additionally pressurized.
IMPORTANT (NOTE)
The emergency shutdown module can only be used with
pneumatics with the safe position “fail-safe”.
The emergency shutdown module works independently of the mother
board, i.e. all information from the final control element is available in
the supervisory process control system at any time.
1)
The module for analog position feedback and the module for
digital position feedback plug in separate slots and can be used
together.
2)
The module for the emergency shutdown function uses the same
space as the module for analog feedback and the module for
analog or digital feedback and cannot be plugged in and run
together with any of them.
Digital position feedback with proximity switches
Two proximity switches for independent position signaling, Switching
points adjustable between 0 ... 100 %
Current circuits acc. to DIN 19234 / NAMUR
Supply voltage 5 ... 11 V DC
Signal current < 1.2 mA Switching state logical “0“
Signal current > 2.1 mA Switching state logical “1“
Direction of action (logical state)
Position
Proximity switch < Lim. 1 > Lim. 1 < Lim. 2 > Lim. 2
SJ2-SN (NC) 0 1 1 0
SJ2-S1N (NO) 1 0 0 1
IMPORTANT (NOTE)
When using proximity switch SJ2_S1N (NO), the TZIDC,
TZIDC-110, TZIDC-120 positioner may only be used at an
ambient temperature range
-25 ... 85 °C (-13 ... 185 °F).
Digital position feedback with 24 V microswitches
Two microswitches for independent position signaling. Switching
points can be adjusted from 0 ... 100 %.
Voltage max. 24 V AC / DC
Load rating max. 2 A
Contact surface 10 µm Gold (AU)
Mechanical position indicator
Indicator disk in enclosure cover linked with positioner feedback
shaft.
IMPORTANT (NOTE)
These options are also available for retrofitting by Service.
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