JC Systems 620A, Reference Manual

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REGAIN LOCAL CONTROLWHEN THE COMPUTER COMMUNICATIONS ARE
DISRUPTED, ANDTHEMODEL 620A IS IN THE “RMT-RUN” MODE.
If computer communications are lost while the Model 620A is running a program in the Remote
(Ext. Computer) mode, the unit must be stopped prior to regaining Local (LCL) mode of operation.
This is accomplished by installing a momentary switch to the input terminal block TB6 of the A2216
PCB between pins 4 (Input 2, Stop) and 7 (0 V).
Pushing the button will stop the program, however, the unit will remain in the RMT mode.
Follow the sequence below to regain Local (LCL) control.
Push the
RMT STOP button (Installed on TB6)
Push the < PAGE DOWN > button (To Main Menu)
Push the < 4 > button (CONFIG-TUNE-CALIB)
Push the < 1 > button (CONFIG-PROGRAMMER)
Push the < \/ > button ( DOWN ARROW ) (Moves cursor to MODE: EXT_COMPUTER)
Push < SEL > button ( Twice ) (To FRONT PANEL)
Push < RESET > button (To the standard run screen in LCL mode)
You are now in the LCL (Front Panel) mode of operation
All functions are now accessible from the front panel.
INT SUP
+ COM
INPUT 1
INPUT 2
INPUT 3
INPUT 4
+ COM
INPUT 5
INPUT 6
INPUT 7
INPUT 8
0 V
10
1
2
3
4
5
6
7
8
9
11
12
13
14
INT SUP
0 V
TB6
P1
1 2 3
TB5
AC HI
AC LO
FRAME GND
P204
3
1
2
3
4
5
1
2
4
5
6
TB3
+ OUT
ANA 1
RETURN
FR GND
+ OUT
ANA 2
RETURN
TB4
FR GND
/CTS
IN
TDX
OUT
/RTS
OUT
RXD
IN
GND
1
2
3
4
5
7
TB1
ISOLATED
GND
+
+
-
-
PROBE 1
PROBE 2
ANALOG
OUT 1 ZERO
ANALOG
OUT 2 ZERO
LOOP 1
LOOP 2
FUSE
2A 250V
ISOLATED
GND
(Run)
(Stop)
(Reset)
(Input 4)
6
8
CH 1 (+)
LIN INPUT
CH 2 (+)
LIN INPUT
Voltages require
V range + Lin.
4/20 Requires 3 JUMPERS
4/20 + 5v + LIN.
1V
10V
5V
4/20mA
Jumper
FOR
LIN. Inputs
Jumper
FOR
LIN. Inputs
1V
4/20mA
5V
10V
J1
J2
R11
R12
J1 & J2
See Below
Push Button
(Momentary)
A2216 Rear Interconnect PCB 4/14/17