gefran 1650 User Manual

80209C_MHW_850-1650-1850_01-2020_ITA_pag. 266
CONTROL FUNCTIONS
CONTROL
Type Single loop, double loop
Control PID, ON/OFF, single action heat or cool, double action heat/cool
Control output Continuous or ON/OFF
Cycle time: constant or optimized (BF)
Control output for motorized
valves
OPEN/CLOSE for floating motorized valve or with feedback with po-
sition control by potentiometer on Relay, Solid-state, Triac outputs.
SETPOINT
PROGRAMMER
(double Programmer
if double loop)
Number of programs Max 16 (if double loop 8 + 8)
Start / Stop / Reset / Skip via digital inputs and/or outputs from
logic operations
Output state: Run /Hold / Ready / End
Number of steps Max 128, each with own setpoint, ramp time and hold time
Times settable in HH:MM or MM:SS
Max 4 consents, configurable for ramp and for hold
Max 4 events, configurable in ramp and in hold
MULTIPLE
SETPOINTS
Number of setpoints Max 4, selectable from digital input
Each setpoint change is subject to set ramp, different for up and
down ramp
LOGIC
OPERATIONS
1
Digital function blocks Max 32, with 4 input variables per block.
The result can act on the state of the controller, of the programmer
on alarms and outputs.
Each function has an AND, OR with TIMER block.
OPERATIONS
MATHEMATICAL
1
Analog function blocks Max 8, with 2 input variables per block, with operators such as + , - ,
× , : , average, square root, ...
The result may act on analog variables in input to PID loops (con-
trolled variable, setpoint) or analog outputs .
TIMER FUNCTION
Number timer Standard: 1
If double loop: 2 independent
Modes START / STOP
STABILIZATION (timer is on when PV enters a band set around
setpoint; at end of count you can activate an output, shut down
SW or change SP1/SP2)
FIRING (timed activation of control after power on)
ENERGY COUNTER
Calculation done on nominal line voltage and nominal load power
or on rms current measured on load via CT
DIAGNOSTIC
Short circuit or open circuit (LBA alarm)
Interrupted or partially interrupted load (HB alarm)
Short circuit of control output (SSR alarm)
RETENTIVE MEMORY
Type FRAM
Writes Max. number: > 10
10
cycles
Retention: > 10 years
(*) if in standard mode; if in “Simplified programmer” mode, Max 12 programs
(**) freely selectable in any program, if in standard mode; if in “Simplified programmer” mode, MAX 16 steps per program, in a set
order: Program 1 Step 1-16, Program 2 Step 17 – 32, and so on

gefran 1650 Specifications

General

Brand	gefran
Model	1650
Category	Temperature Controller
Language	English