Instruction Manual

1-12 BHK-MG (OPR) 022014
1.4.12 ANALOG READBACK AND FLAG SIGNALS AVAILABLE FOR CUSTOMER USE
Some internal signals produced by the unit are available at connector A2J5 for either monitoring
or testing purposes. Refer to Table 1-3 for a description of available signals
1.5 EQUIPMENT SUPPLIED
Equipment supplied with the unit is listed in Table 1-4.
TABLE 1-3. CONNECTOR A2J5 SIGNAL DESCRIPTIONS
SIGNAL PIN. NO. VALUE TYPE
Current Scale Flag 1
≈ 0V for HIGH current scale
> +13V for LOW current scale
Collector of PNP transistor (A2Q3)
through 1K resistance.*
Step Down Flag 2
< -11V for steady or step-up output
> +11V for step-down output, or when pro-
tection circuit has functioned and “BHK
FAILURE” error message is displayed
Output of open loop Op Amp
(A2U4B) through 1K resistance.*
Power GND 3 N/A
Recommended to be used as Return
for signals at pins 1, 2, and 4.*
V-C Mode Flag 4
< -11V for CV (Constant Voltage) mode
> +11V for CC (Constant Current) mode
Output of open loop Op Amp
(A2U4A) through 1K resistance.*
Signal GND 5, 7 N/A
Recommended to be used as Return
for signals at pins 6 and 8.*
Current Monitor
(not calibrated)
6
0V ± 10mV (for I
O
= 0mA) to
+10V ± 0.12V (for I
O
= Full Scale)
Output of closed loop Op Amp
(A2U7) *
Voltage Monitor
(not calibrated)
8
0V ± 10mV (for E
O
= 0V to)
+10V ± 0.25V (for E
O
= Full Scale)
Output of closed loop Op Amp
(A2U1) *
* Recommended load equal to or greater than 10K ohms.
TABLE 1-4. EQUIPMENT SUPPLIED
ITEM
PART NUMBER QUANTITY
Power Cord 118-0557 1
Plug, 2-contact for ± front panel output jacks 142-0489 1
Contact, pin type (used on plug 142-0489) 107-0361 2
Status Port mating connector 143-0296 1
Two-terminal Link for rear panel output 172-0300 2
Three-terminal Link for rear panel output 172-0305 2
Four-terminal Link for rear panel output (installed) 172-0407 2
Five-terminal Link for rear panel output 172-0321 1
Six-terminal Link for rear panel output 172-0408 1