User Manual

CE1N2222E / 14.01.1999 Siemens Building Technologies
4/6 Landis & Staefa Division
123
PID 12
PID 6
2-Pt
2222Z01
Self learning
16...29°C
3...29°C
When using minimum limitation of set point to 16 °C, undesired heat transfer to neigh-
bouring flats is prevented in buildings that have several heating zones. The function can
be selected with the DIP switch.
The REV11… is a two-position controller providing PID control. The room temperature
is controlled through the cyclic switching of a regulating unit.
The controller is supplied with an active self-learning mode, which enables it to auto-
matically adapt to the controlled system (type of building construction, type of radiators,
size of rooms, etc.). After a certain learning period, the controller optimises its parame-
ters and then operates in the mode it has learned.
In exceptional cases, where the self-learning mode may not be adequate, it is possible
to choose PID 12, PID 6 or 2-Pt mode:
PID 12 mode Switching cycle of 12 min for normal or slow controlled systems (e.g.
massive building structures, large spaces, cast-iron radiators, oil burn-
ers).
PID 6 mode Switching cycle of 6 min for fast controlled systems (e.g. light building
structures, small spaces, plate radiators or convectors, gas burners).
2-Pt mode Pure two-position control with a switching differential of 0.5 °C
(±0.25 °C) for very difficult controlled systems with considerable out-
side temperature variations.
Operating voltage DC 3 V
Batteries (alkaline AA) 2 x 1.5 V
Battery life approx. 3 years
Backup for
battery change 1 min max.
conformity to
EEC directive 89/336/EEC
low voltage directive 73/23/EEC
Switching capacity of relays
Voltage AC 24…250 V
Current 8 (3.5) A
Measuring element NTC 68 kΩ at 25 °C
Measuring range 0…40 °C
Time constant 2 min max.
Set point setting range
Normal temperature 3…29 °C
Economy temperature 3…29 °C
Set point for frost protection 5 °C
Resolution of settings and display
Set points 0.2 °C
Switching times 10 min
Measurem. of actual value 0.1 °C
Display of actual value 0.2 °C
Time display 1 min
Insulation class
to EN 60730-1 II
Degree of protection
to EN 60529 IP30
Electromagnetic compatibility
Immunity EN 50082-2
Emissions EN 50081-1
Perm. ambient temperature
Operation 3...35 °C
Storage -25...+60 °C
Perm. ambient humidity
to DIN 40040 G
Weight 0.2 kg
Colour White
RAL9003
Technical features
DIP switch
Limitation of set point
Control
Self-learning mode
Exceptional cases
Technical data