Serial Port:
The female DB-9 port allows the customer to make a 3-wire RS232 interface with
the BB701. A detailed description of this port is described in Section 4.
3.3
Changing the Temperature Setpoint
The layout of the front panel is shown in Figure 3. The BB701 incorporates a PID
digital setpoint controller. The upper display indicates the blackbody target plate
temperature known as (PV) Process Variable, while the lower display indicates
the programmed setpoint known as (SV) Setpoint Variable. Making changes
to the setpoint, units can be made via the
and
keys. Holding a key in,
continuously, will cause the setpoint temperature to advance more quickly to
a desired value. Three scanning speeds are provided: slow, medium and fast.
The minimum and maximum setpoints are locked at 0 and 300°F, respectively.
While these max. and min. settings are changeable (see “Changing the Internal
Parameters,” Section 3.4), it is strongly advised not to adjust these parameters.
3.4
Changing the Controller Parameter Settings
The BB701 operates at its optimum performance when left with its factory
parameter settings. The only internal parameter that the operator should feel
the need to change is the engineering units (°C or °F), display resolution (XXX,
XXX.X or X.XX) or serial communications parameters. Below are two diagrams:
a) Menu Hierarchy Showing Factory Default Settings
b) Changing The Controller’s Parameter Settings.
Figure 5. Menu Hierarchy Showing Factory Default Settings
3-4
Menu 00
Menu 01
Menu 02
Menu 03
Menu 04
Menu 05
Key Lock
SETPOINT
Ac.Cd = 02
Ac.Cd = 03
Ac.Cd = 04
Ac.Cd = 05
Ac.Cd
Gn.o1
128
ALr1
id.no
01
SnSr
d
Gr.o2 1.1
ALr2
bAUd 12.o.7
Sn.00
rAtE
03
Cy.t1
00
CAL.L
dEC.P
rSEt
12
Cy.t2
00
CAL.H
FILt
H.Hys
SP.tt
OFF
OUt.1 Ht.P
HyS.1
L.SP.L 0.0
OUt.2 CL.P
C.HyS
L.SCL
CoL.t
nor
HyS.2
U.SP.L 300.0
A1.HL
HI
C.SPr
H.SCL
A1.Pd Pr
SPr.2
A1.OP OFF
dPnG Nl
A2.HL LO
A2.Pd Pr
A2.OP OFF
Unit
F
BB701
3
