Temperature Controls
Single Loop PID-Controllers
Type PDI 70
• 4-dgt multi-range µP-based PID controller
• Temperature measurements in °C or °F
• All software functions selectable by key-pad
• PID, ON/OFF and neutral zone selectable controls
• Autotuning, direct or reverse PID control and dynamic
setpoint capability
• One relay or SSR control output
• One independent alarm setpoint (on request)
• Front size: 72 x 72mm
Product Description
4-dgt multi-range µP-based
controller for temperature
measurements in °C or °F and
for process signals.
Input from thermoresistance
or thermocouple, PTC, 0/4 to
20 mA or 0 to 10 VDC. Any
parameter is fully programm-
able by user-friendly key-pad.
The PDI 70 includes autotun-
ing, direct or reverse PID
control and dynamic setpoint
capability. The housing is easy
to mount and ensures a
degree of protection of IP 54.
Ordering Key
Model
Measurement
Power supply
Control output (Out 1)
Alarm output (Out 2)
PDI70 T1 2RX
Type Selection
Measurements
T1:
T2:
T3:
C1:
C2:
V1:
TC inputs: J, K, S
RTD inputs:
Pt100, Ni100
PTC input: KTY81
4 to 20 mA DC
0 to 20 mADC
0 to 10 VDC
Power supply
1:
24 VAC, -10% +10%,
50/60 Hz
48 VAC, -10% +10%,
50/60 Hz
115 VAC, -10% +10%,
50/60 Hz
230 VAC, -10% +10%,
50/60 Hz (standard)
120 VAC, -10% +10%,
50/60 Hz
240 VAC, -10% +10%,
50/60 Hz
24 VDC, -10% +10%
with galvanic insulation
1)
1)
1)
Control output (Out 1)
R:
0:
Relay
SSR (12 VDC)
Alarm output (Out 2)
X:
R:
0:
None
Relay
SSR (12 VDC)
2:
4:
3:
On request
1)
Input Specifications
Accuracy
RTD (Pt100, Ni100)
(@ 25°C ± 5°C, R.H.
≤
60%)
TC (J, K, S)
(@ 25°C ± 5°C, R.H.
≤
60%)
PTC (RTY81, 990Ω @ 25°C)
(@ 25°C ± 5°C, R.H.≤60% )
Process Signals (20 mA, 10V)
(@ 25°C ± 5°C, R.H.≤60% )
± 0.5% f.s., ± 1 dgt
± 0.5% f.s., ± 1 dgt
± 0.5% f.s., ± 1 dgt
± 0.5% f.s., ± 1 dgt
Temperature drift
RTD
TC
PTC (KTY81, 990
Ω
@ 25°C)
Process signals
Sampling rate
Display
Max. and min. indication
RTD/TC/PTC
Process signals
± 10 ppm/°C
± 10 ppm/°C
± 10 ppm/°C
± 10 ppm/°C
1 time/second
7-segment LED, h 14 mm
Depending on range and type
of the temperature probe
Max. 7000 (700.0),
Min. -999 (-99.9)
Specifications are subject to change without notice (26.10.99)
1
PDI 70
Input Specifications (cont.)
Compensation
RTD
TC
Input RTD ranges
Probe: Pt100
For 3-wire connections, line
resistance up to 10
Ω
Cold junction, within the tem-
perature range from 0 to 55°C
Input TC ranges
Probe: TC-J
Probe: TC-K
Probe: TC-S
Input process signal ranges
Key-pad
0°C/+32°F to +800°C/+1472°F
0°C/+32°F to +1200°C/+2192°F
0°C/+32°F to +1600°C/+2912°F
-999 to 7000
-99.9 to 700.0
3 Keys: “S” to enter into the
programming procedure;
“UP/DOWN” for parameter
selection; “S” + “UP/DOWN”
for value programming
-200°C/-328°F to+600°C /+1112°F
-99.9°C/°F to +600.0°C/+999.9°F
Probe: Ni100
-50°C/-58°F to +150°C/+302°F
-50.0°C/-58.0°F to+150.0°C/+302.0°F
Input PTC ranges:
-50°C/-58°F to +150°C/+302°F
Probe: KTY81 (990Ω @ 25°C) -50.0°C/-58.0°F to +150.0°C/+302.0°F
Output Specifications
Output combinations
- only one control output (Out 1)
type: ON/OFF, PID;
- one independent control
output (Out 1) with additional
alarm output: up, down alarm;
- two dependent ON/OFF
control outputs;
- one ON/OFF control output (Out 1)
with dependent relative or
absolute alarm output:
up, down alarm;
- one control output with additional
control output (dead band) to
carry out the neutral zone control
1 (standard)
PID, ON/OFF
0 to 100% of the input range.
Programmable minimum
and maximum values
Programmable proportional
band within the whole input
range (1 or 0.1 resolution);
Programmable manual reset
within the whole input range;
Programmable integral time
(0 to 3600 s);
Programmable derivative
time (0 to 3600 s);
Programmable cycle time
(1 to 500 s)
Programmable hysteresis
within the whole input range;
Programmable activation time
delay (0 to 500 s)
Programmable dead band within
the whole input range (available
only if the 2nd output is present)
Output Working
Type of output
Insulation
Direct (cooling) or reverse (heating)
Relay: 8A-AC1, 3A-AC3,
250 VAC, 100.000 cycles
SSR: 12 VDC/max. 12 mA
Relay output: 2000 V
rms
from
output to: measuring input,
AC power supply input.
SSR output: no insulation from
output to measuring input.
2000 V
rms
from output to
AC power supply input.
1 (on request)
Alarm, ON/OFF, neutral zone
Up alarm or down alarm
0 to 100% of the input range
Programmable minimum and
maximum values
Programmable hysteresis
within the whole measuring
range
Programmable activation
time delay (0 to 500 s)
Programmable dead band
within the whole measuring
range
Direct (cooling) or reverse
(heating)
Relay: 8A-AC1, 3A-AC3,
250 VAC, 100.000 cycles
SSR: 12 VDC/max. 12 mA
Relay output: 2000 V
rms
from
output to measuring input,
AC power supply input.
SSR output: no insulation from
output to measuring input.
2000 V
rms
from output to
AC power supply input.
Control output
Control types
Setpoint adjustment
Limits of setpoint adjustment
PID control parameters
Alarm output
Output types
Alarm functions
Setpoint adjustment
Limits of setpoint adjustment
ON/OFF control parameters
Neutral zone control
Output working
Type of output
Insulation
ON/OFF control parameters
Neutral zone control
Software Functions
Dynamic setpoint
(see fig. 4)
- Action only on 1st output,
automatic increase of the
set-point up to the pro-
grammed one
- Half band programming (drb)
(0 to 100% of the input range)
over which the dynamic
set-point is active
- step increase (dSI) parameter,
programmable from 0 to
100% of the input range
- time interval (dSt) between
two step increases pro-
grammable from 1 to 3600 s
2
Specifications are subject to change without notice (26.10.99)
PDI 70
Software Functions (cont.)
Scaling factor
programming of the lower
limit of the displayed scale
(only mA/V input) connected
to 0 mA/V or 4 mA, programm-
ing of the higher limit of
the displayed scale (only
mA/V input) connected to
20 mA/10 V.
Offset programming value:
from –999 to 999, selection
of decimal point activation
(1 or 0.1), °C/°F engineering
unit selection, least digit
approximation
Autotuning
Activation of autotuning
feature or manual program-
ming of the PID parameters
The display flashes when
the limits of the displayed
range are exceeded.
Over-range: EEEE
Under-range: - - - -
Opening of the probe connec-
tion, EEEE indication
Opening of the probe connec-
tion, EEEE indication
Probe short-circuit,
- - - - indication
In case of error the outputs
are de-activated
Diagnostics
Burn-out
TC
RTD /PTC/mA/V
Outputs
Supply Specifications
AC supply
Insulation
24 VAC, 48 VAC, 115 VAC,
120 VAC, 230 VAC, 240 VAC,
-10% +10%, 50/60 Hz
2000 V
rms
from power
supply input to: measuring
input, relay output
24 VDC, ±10%
500 V
rms
from power supply
input to:
measuring input, relay output
5 VA
From 0° to +55°C
(R.H. < 90% non-condensing)
From -10° to +60°C
(R.H. < 90% non-condensing)
300 V
rms
to earth
General Specifications
Dielectric strength
Noise rejection
NMRR
CMRR
EMC
Safety standards
Connector
Housing
Dimensions
Material
Degree of protection
Weight
Approvals
3750 V
rms
for 1 minute
40 dB, from 40 to 60 Hz
100 dB, from 40 to 60 Hz
EN 50 081-1, EN 50 082-1
EN 60730-1
Screw-type (detachable)
72 x 72 x 97 mm
ABS,
self-extinguishing: UL 94 V-0
IP 54 with gasket
Approx 250 g
CE
DC supply
Insulation
Power consumption
Operating temperature
Storage temperature
Insulation reference voltage
Dimensions
Terminal Board
Specifications are subject to change without notice (26.10.99)
3
PDI 70
Output Controls
ON/OFF control
ON/OFF control
Fig. 1
Neutral zone control
Dynamic setpoint
Fig. 2
Fig. 3
-d
+d
dB
= negative hysteresis
= positive hysteresis
= dead band
Fig. 4
drb = half band parameter
dSI = step increase
dSt = time interval between two step increases
Front Panel Description
2
”
” and ”
”
- Up and down keys for selecting programming parameters.
- S + Up and down Keys for value programming.
2. Display
4-digit (maximum read-out 7000).
Alphanumeric indication by means of 7-segment display for:
- Displaying of the measured value, over-range, burn-out
and programming indications.
- Indication of programming parameters.
3. LED’s
4 red LEDs for the indication of:
- process variable under (–) the setpoint limit
- process variable over (+) the setpoint limit
- activation of the first output (out 1)
- activation of the second output (out 2)
1 green LED for the indication of the process variable equal
to the setpoint.
3
1
1. Key-pad
Set-up and programming procedures are easily controlled
by the 3 pushbuttons.
“S”
- Key to enter the programming procedure
(instrument configuration)
4
Specifications are subject to change without notice (26.10.99)
