diff --git a/documentation/proc-pages/physics-models/pulsed-plant.md b/documentation/proc-pages/physics-models/pulsed-plant.md
index c57f751e1..39370ec4c 100644
--- a/documentation/proc-pages/physics-models/pulsed-plant.md
+++ b/documentation/proc-pages/physics-models/pulsed-plant.md
@@ -31,9 +31,9 @@ but this is not taken ito account.
 
 In the steady-state scenario (`i_pulsed_plant` = 0), the plasma current ramp-up time `t_current_ramp_up` is determined as follows. 
 
-- If `tohsin` = 0, the rate of change of plasma current is 0.5 MA/s. The PF coil ramp time `t_precharge` 
+- If `i_t_current_ramp_up` = 0, the rate of change of plasma current is 0.5 MA/s. The PF coil ramp time `t_precharge` 
   and shutdown time `t_ramp_down` are (arbitrarily) set equal to `t_current_ramp_up`. 
-- If `tohsin` $\neq$ 0, the plasma current ramp-up time `t_current_ramp_up` = `tohsin`, and the PF coil ramp 
+- If `i_t_current_ramp_up` $\neq$ 0, the plasma current ramp-up time `t_current_ramp_up`, and the PF coil ramp 
   and shutdown times are input parameters.
 
 In the pulsed scenario, (`i_pulsed_plant` = 1), the plasma current ramp-up time `t_current_ramp_up` is an input, and it 
diff --git a/process/physics.py b/process/physics.py
index 04f93a017..eadcc389b 100644
--- a/process/physics.py
+++ b/process/physics.py
@@ -1689,14 +1689,12 @@ def physics(self):
 
         # Set PF coil ramp times
         if pulse_variables.i_pulsed_plant != 1:
-            if times_variables.tohsin == 0.0e0:
+            if times_variables.i_t_current_ramp_up == 0:
                 times_variables.t_current_ramp_up = (
                     physics_variables.plasma_current / 5.0e5
                 )
                 times_variables.t_precharge = times_variables.t_current_ramp_up
                 times_variables.t_ramp_down = times_variables.t_current_ramp_up
-            else:
-                times_variables.t_current_ramp_up = times_variables.tohsin
 
         else:
             if times_variables.pulsetimings == 0.0e0:
diff --git a/source/fortran/input.f90 b/source/fortran/input.f90
index 0f3d0d130..fbd69fe1a 100644
--- a/source/fortran/input.f90
+++ b/source/fortran/input.f90
@@ -345,7 +345,7 @@ subroutine parse_input_file(in_file,out_file,show_changes)
       len_tf_bus
 
     use times_variables, only: t_current_ramp_up, pulsetimings, t_ramp_down, t_fusion_ramp, t_precharge, t_burn, &
-      t_between_pulse, tohsin
+      t_between_pulse, i_t_current_ramp_up
     use vacuum_variables, only: dwell_pump, pbase, tn, pumpspeedfactor, &
       initialpressure, outgasfactor, prdiv, pumpspeedmax, rat, outgasindex, &
       pumpareafraction, ntype, vacuum_model, pumptp
@@ -1126,8 +1126,8 @@ subroutine parse_input_file(in_file,out_file,show_changes)
        case ('t_current_ramp_up')
           call parse_real_variable('t_current_ramp_up', t_current_ramp_up, 0.0D0, 1.0D4, &
                'Plasma current ramp-up time for current init (s)')
-       case ('tohsin')
-          call parse_real_variable('tohsin', tohsin, 0.0D0, 1.0D4, &
+       case ('i_t_current_ramp_up')
+          call parse_int_variable('i_t_current_ramp_up', i_t_current_ramp_up, 0, 1, &
                'Switch for t_current_ramp_up calculation')
        case ('t_ramp_down')
           call parse_real_variable('t_ramp_down', t_ramp_down, 0.0D0, 1.0D4, &
diff --git a/source/fortran/times_variables.f90 b/source/fortran/times_variables.f90
index fccf9a329..96daf7385 100644
--- a/source/fortran/times_variables.f90
+++ b/source/fortran/times_variables.f90
@@ -51,11 +51,11 @@ module times_variables
   !! time for plasma current to ramp up to approx. full value (s) (calculated if `i_pulsed_plant=0`)
   !! (`iteration variable 65`)
 
-  real(dp) :: tohsin
+  integer :: i_t_current_ramp_up
   !! Switch for plasma current ramp-up time (if i_pulsed_plant=0):
   !!
   !! - = 0, t_current_ramp_up = t_precharge = t_ramp_down = Ip(MA)/0.5
-  !! - <>0, t_current_ramp_up = tohsin; t_precharge, t_ramp_down are input
+  !! - = 1, t_current_ramp_up, t_precharge, t_ramp_down are input
 
   real(dp) :: t_pulse_repetition
   !! pulse length = t_current_ramp_up + t_fusion_ramp + t_burn + t_ramp_down
@@ -93,7 +93,7 @@ subroutine init_times_variables
       't_burn             ', &
       't_ramp_down        ' /)
     t_current_ramp_up = 30.0D0
-    tohsin = 0.0D0
+    i_t_current_ramp_up = 0
     t_pulse_repetition = 0.0D0
     t_ramp_down = 15.0D0
     t_precharge = 15.0D0